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7c673cae FG |
1 | #include "common/ceph_json.h" |
2 | #include "include/utime.h" | |
3 | ||
4 | // for testing DELETE ME | |
5 | #include <fstream> | |
31f18b77 | 6 | #include <include/types.h> |
7c673cae | 7 | |
11fdf7f2 TL |
8 | #include <boost/algorithm/string.hpp> |
9 | #include <boost/tokenizer.hpp> | |
10 | #include <boost/lexical_cast.hpp> | |
11 | ||
12 | #include "json_spirit/json_spirit_writer_template.h" | |
13 | ||
7c673cae FG |
14 | using namespace json_spirit; |
15 | ||
f67539c2 TL |
16 | using std::ifstream; |
17 | using std::pair; | |
18 | using std::ostream; | |
19 | using std::string; | |
20 | using std::vector; | |
7c673cae | 21 | |
f67539c2 TL |
22 | using ceph::bufferlist; |
23 | using ceph::Formatter; | |
11fdf7f2 | 24 | |
f67539c2 | 25 | #define dout_subsys ceph_subsys_rgw |
11fdf7f2 | 26 | |
f67539c2 | 27 | static JSONFormattable default_formattable; |
11fdf7f2 TL |
28 | |
29 | void encode_json(const char *name, const JSONObj::data_val& v, Formatter *f) | |
30 | { | |
31 | if (v.quoted) { | |
32 | encode_json(name, v.str, f); | |
33 | } else { | |
34 | f->dump_format_unquoted(name, "%s", v.str.c_str()); | |
35 | } | |
36 | } | |
37 | ||
7c673cae FG |
38 | JSONObjIter::JSONObjIter() |
39 | { | |
40 | } | |
41 | ||
42 | JSONObjIter::~JSONObjIter() | |
43 | { | |
44 | } | |
45 | ||
46 | void JSONObjIter::set(const JSONObjIter::map_iter_t &_cur, const JSONObjIter::map_iter_t &_last) | |
47 | { | |
48 | cur = _cur; | |
49 | last = _last; | |
50 | } | |
51 | ||
52 | void JSONObjIter::operator++() | |
53 | { | |
54 | if (cur != last) | |
55 | ++cur; | |
56 | } | |
57 | ||
58 | JSONObj *JSONObjIter::operator*() | |
59 | { | |
60 | return cur->second; | |
61 | } | |
62 | ||
63 | // does not work, FIXME | |
64 | ostream& operator<<(ostream &out, const JSONObj &obj) { | |
11fdf7f2 | 65 | out << obj.name << ": " << obj.val; |
7c673cae FG |
66 | return out; |
67 | } | |
68 | ||
69 | JSONObj::~JSONObj() | |
70 | { | |
f67539c2 | 71 | for (auto iter = children.begin(); iter != children.end(); ++iter) { |
7c673cae FG |
72 | JSONObj *obj = iter->second; |
73 | delete obj; | |
74 | } | |
75 | } | |
76 | ||
77 | ||
78 | void JSONObj::add_child(string el, JSONObj *obj) | |
79 | { | |
80 | children.insert(pair<string, JSONObj *>(el, obj)); | |
81 | } | |
82 | ||
11fdf7f2 | 83 | bool JSONObj::get_attr(string name, data_val& attr) |
7c673cae | 84 | { |
11fdf7f2 | 85 | auto iter = attr_map.find(name); |
7c673cae FG |
86 | if (iter == attr_map.end()) |
87 | return false; | |
88 | attr = iter->second; | |
89 | return true; | |
90 | } | |
91 | ||
92 | JSONObjIter JSONObj::find(const string& name) | |
93 | { | |
94 | JSONObjIter iter; | |
f67539c2 | 95 | auto first = children.find(name); |
7c673cae | 96 | if (first != children.end()) { |
f67539c2 | 97 | auto last = children.upper_bound(name); |
7c673cae FG |
98 | iter.set(first, last); |
99 | } | |
100 | return iter; | |
101 | } | |
102 | ||
103 | JSONObjIter JSONObj::find_first() | |
104 | { | |
105 | JSONObjIter iter; | |
106 | iter.set(children.begin(), children.end()); | |
107 | return iter; | |
108 | } | |
109 | ||
110 | JSONObjIter JSONObj::find_first(const string& name) | |
111 | { | |
112 | JSONObjIter iter; | |
f67539c2 | 113 | auto first = children.find(name); |
7c673cae FG |
114 | iter.set(first, children.end()); |
115 | return iter; | |
116 | } | |
117 | ||
118 | JSONObj *JSONObj::find_obj(const string& name) | |
119 | { | |
120 | JSONObjIter iter = find(name); | |
121 | if (iter.end()) | |
122 | return NULL; | |
123 | ||
124 | return *iter; | |
125 | } | |
126 | ||
11fdf7f2 | 127 | bool JSONObj::get_data(const string& key, data_val *dest) |
7c673cae FG |
128 | { |
129 | JSONObj *obj = find_obj(key); | |
130 | if (!obj) | |
131 | return false; | |
132 | ||
11fdf7f2 | 133 | *dest = obj->get_data_val(); |
7c673cae FG |
134 | |
135 | return true; | |
136 | } | |
137 | ||
138 | /* accepts a JSON Array or JSON Object contained in | |
139 | * a JSON Spirit Value, v, and creates a JSONObj for each | |
140 | * child contained in v | |
141 | */ | |
142 | void JSONObj::handle_value(Value v) | |
143 | { | |
144 | if (v.type() == obj_type) { | |
145 | Object temp_obj = v.get_obj(); | |
146 | for (Object::size_type i = 0; i < temp_obj.size(); i++) { | |
147 | Pair temp_pair = temp_obj[i]; | |
148 | string temp_name = temp_pair.name_; | |
149 | Value temp_value = temp_pair.value_; | |
150 | JSONObj *child = new JSONObj; | |
151 | child->init(this, temp_value, temp_name); | |
152 | add_child(temp_name, child); | |
153 | } | |
154 | } else if (v.type() == array_type) { | |
155 | Array temp_array = v.get_array(); | |
156 | Value value; | |
157 | ||
158 | for (unsigned j = 0; j < temp_array.size(); j++) { | |
159 | Value cur = temp_array[j]; | |
160 | string temp_name; | |
161 | ||
162 | JSONObj *child = new JSONObj; | |
163 | child->init(this, cur, temp_name); | |
164 | add_child(child->get_name(), child); | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | void JSONObj::init(JSONObj *p, Value v, string n) | |
170 | { | |
171 | name = n; | |
172 | parent = p; | |
173 | data = v; | |
174 | ||
175 | handle_value(v); | |
11fdf7f2 TL |
176 | if (v.type() == str_type) { |
177 | val.set(v.get_str(), true); | |
178 | } else { | |
179 | val.set(json_spirit::write_string(v), false); | |
180 | } | |
181 | attr_map.insert(pair<string,data_val>(name, val)); | |
7c673cae FG |
182 | } |
183 | ||
184 | JSONObj *JSONObj::get_parent() | |
185 | { | |
186 | return parent; | |
187 | } | |
188 | ||
189 | bool JSONObj::is_object() | |
190 | { | |
191 | return (data.type() == obj_type); | |
192 | } | |
193 | ||
194 | bool JSONObj::is_array() | |
195 | { | |
196 | return (data.type() == array_type); | |
197 | } | |
198 | ||
199 | vector<string> JSONObj::get_array_elements() | |
200 | { | |
201 | vector<string> elements; | |
202 | Array temp_array; | |
203 | ||
204 | if (data.type() == array_type) | |
205 | temp_array = data.get_array(); | |
206 | ||
207 | int array_size = temp_array.size(); | |
208 | if (array_size > 0) | |
209 | for (int i = 0; i < array_size; i++) { | |
210 | Value temp_value = temp_array[i]; | |
211 | string temp_string; | |
212 | temp_string = write(temp_value, raw_utf8); | |
213 | elements.push_back(temp_string); | |
214 | } | |
215 | ||
216 | return elements; | |
217 | } | |
218 | ||
219 | JSONParser::JSONParser() : buf_len(0), success(true) | |
220 | { | |
221 | } | |
222 | ||
223 | JSONParser::~JSONParser() | |
224 | { | |
225 | } | |
226 | ||
227 | ||
228 | ||
229 | void JSONParser::handle_data(const char *s, int len) | |
230 | { | |
231 | json_buffer.append(s, len); // check for problems with null termination FIXME | |
232 | buf_len += len; | |
233 | } | |
234 | ||
235 | // parse a supplied JSON fragment | |
236 | bool JSONParser::parse(const char *buf_, int len) | |
237 | { | |
238 | if (!buf_) { | |
239 | set_failure(); | |
240 | return false; | |
241 | } | |
242 | ||
243 | string json_string(buf_, len); | |
244 | success = read(json_string, data); | |
11fdf7f2 | 245 | if (success) { |
7c673cae | 246 | handle_value(data); |
11fdf7f2 TL |
247 | if (data.type() != obj_type && |
248 | data.type() != array_type) { | |
249 | if (data.type() == str_type) { | |
250 | val.set(data.get_str(), true); | |
251 | } else { | |
252 | val.set(json_spirit::write_string(data), false); | |
253 | } | |
254 | } | |
255 | } else { | |
7c673cae | 256 | set_failure(); |
11fdf7f2 | 257 | } |
7c673cae FG |
258 | |
259 | return success; | |
260 | } | |
261 | ||
262 | // parse the internal json_buffer up to len | |
263 | bool JSONParser::parse(int len) | |
264 | { | |
265 | string json_string = json_buffer.substr(0, len); | |
266 | success = read(json_string, data); | |
267 | if (success) | |
268 | handle_value(data); | |
269 | else | |
270 | set_failure(); | |
271 | ||
272 | return success; | |
273 | } | |
274 | ||
275 | // parse the complete internal json_buffer | |
276 | bool JSONParser::parse() | |
277 | { | |
278 | success = read(json_buffer, data); | |
279 | if (success) | |
280 | handle_value(data); | |
281 | else | |
282 | set_failure(); | |
283 | ||
284 | return success; | |
285 | } | |
286 | ||
287 | // parse a supplied ifstream, for testing. DELETE ME | |
288 | bool JSONParser::parse(const char *file_name) | |
289 | { | |
290 | ifstream is(file_name); | |
291 | success = read(is, data); | |
292 | if (success) | |
293 | handle_value(data); | |
294 | else | |
295 | set_failure(); | |
296 | ||
297 | return success; | |
298 | } | |
299 | ||
300 | ||
301 | void decode_json_obj(long& val, JSONObj *obj) | |
302 | { | |
303 | string s = obj->get_data(); | |
304 | const char *start = s.c_str(); | |
305 | char *p; | |
306 | ||
307 | errno = 0; | |
308 | val = strtol(start, &p, 10); | |
309 | ||
310 | /* Check for various possible errors */ | |
311 | ||
312 | if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) || | |
313 | (errno != 0 && val == 0)) { | |
314 | throw JSONDecoder::err("failed to parse number"); | |
315 | } | |
316 | ||
317 | if (p == start) { | |
318 | throw JSONDecoder::err("failed to parse number"); | |
319 | } | |
320 | ||
321 | while (*p != '\0') { | |
322 | if (!isspace(*p)) { | |
323 | throw JSONDecoder::err("failed to parse number"); | |
324 | } | |
325 | p++; | |
326 | } | |
327 | } | |
328 | ||
329 | void decode_json_obj(unsigned long& val, JSONObj *obj) | |
330 | { | |
331 | string s = obj->get_data(); | |
332 | const char *start = s.c_str(); | |
333 | char *p; | |
334 | ||
335 | errno = 0; | |
336 | val = strtoul(start, &p, 10); | |
337 | ||
338 | /* Check for various possible errors */ | |
339 | ||
340 | if ((errno == ERANGE && val == ULONG_MAX) || | |
341 | (errno != 0 && val == 0)) { | |
342 | throw JSONDecoder::err("failed to number"); | |
343 | } | |
344 | ||
345 | if (p == start) { | |
346 | throw JSONDecoder::err("failed to parse number"); | |
347 | } | |
348 | ||
349 | while (*p != '\0') { | |
350 | if (!isspace(*p)) { | |
351 | throw JSONDecoder::err("failed to parse number"); | |
352 | } | |
353 | p++; | |
354 | } | |
355 | } | |
356 | ||
357 | void decode_json_obj(long long& val, JSONObj *obj) | |
358 | { | |
359 | string s = obj->get_data(); | |
360 | const char *start = s.c_str(); | |
361 | char *p; | |
362 | ||
363 | errno = 0; | |
364 | val = strtoll(start, &p, 10); | |
365 | ||
366 | /* Check for various possible errors */ | |
367 | ||
368 | if ((errno == ERANGE && (val == LLONG_MAX || val == LLONG_MIN)) || | |
369 | (errno != 0 && val == 0)) { | |
370 | throw JSONDecoder::err("failed to parse number"); | |
371 | } | |
372 | ||
373 | if (p == start) { | |
374 | throw JSONDecoder::err("failed to parse number"); | |
375 | } | |
376 | ||
377 | while (*p != '\0') { | |
378 | if (!isspace(*p)) { | |
379 | throw JSONDecoder::err("failed to parse number"); | |
380 | } | |
381 | p++; | |
382 | } | |
383 | } | |
384 | ||
385 | void decode_json_obj(unsigned long long& val, JSONObj *obj) | |
386 | { | |
387 | string s = obj->get_data(); | |
388 | const char *start = s.c_str(); | |
389 | char *p; | |
390 | ||
391 | errno = 0; | |
392 | val = strtoull(start, &p, 10); | |
393 | ||
394 | /* Check for various possible errors */ | |
395 | ||
396 | if ((errno == ERANGE && val == ULLONG_MAX) || | |
397 | (errno != 0 && val == 0)) { | |
398 | throw JSONDecoder::err("failed to number"); | |
399 | } | |
400 | ||
401 | if (p == start) { | |
402 | throw JSONDecoder::err("failed to parse number"); | |
403 | } | |
404 | ||
405 | while (*p != '\0') { | |
406 | if (!isspace(*p)) { | |
407 | throw JSONDecoder::err("failed to parse number"); | |
408 | } | |
409 | p++; | |
410 | } | |
411 | } | |
412 | ||
413 | void decode_json_obj(int& val, JSONObj *obj) | |
414 | { | |
415 | long l; | |
416 | decode_json_obj(l, obj); | |
417 | #if LONG_MAX > INT_MAX | |
418 | if (l > INT_MAX || l < INT_MIN) { | |
419 | throw JSONDecoder::err("integer out of range"); | |
420 | } | |
421 | #endif | |
422 | ||
423 | val = (int)l; | |
424 | } | |
425 | ||
426 | void decode_json_obj(unsigned& val, JSONObj *obj) | |
427 | { | |
428 | unsigned long l; | |
429 | decode_json_obj(l, obj); | |
430 | #if ULONG_MAX > UINT_MAX | |
431 | if (l > UINT_MAX) { | |
432 | throw JSONDecoder::err("unsigned integer out of range"); | |
433 | } | |
434 | #endif | |
435 | ||
436 | val = (unsigned)l; | |
437 | } | |
438 | ||
439 | void decode_json_obj(bool& val, JSONObj *obj) | |
440 | { | |
441 | string s = obj->get_data(); | |
442 | if (strcasecmp(s.c_str(), "true") == 0) { | |
443 | val = true; | |
444 | return; | |
445 | } | |
446 | if (strcasecmp(s.c_str(), "false") == 0) { | |
447 | val = false; | |
448 | return; | |
449 | } | |
450 | int i; | |
451 | decode_json_obj(i, obj); | |
452 | val = (bool)i; | |
453 | } | |
454 | ||
455 | void decode_json_obj(bufferlist& val, JSONObj *obj) | |
456 | { | |
457 | string s = obj->get_data(); | |
458 | ||
459 | bufferlist bl; | |
460 | bl.append(s.c_str(), s.size()); | |
461 | try { | |
462 | val.decode_base64(bl); | |
f67539c2 | 463 | } catch (ceph::buffer::error& err) { |
7c673cae FG |
464 | throw JSONDecoder::err("failed to decode base64"); |
465 | } | |
466 | } | |
467 | ||
468 | void decode_json_obj(utime_t& val, JSONObj *obj) | |
469 | { | |
470 | string s = obj->get_data(); | |
471 | uint64_t epoch; | |
472 | uint64_t nsec; | |
473 | int r = utime_t::parse_date(s, &epoch, &nsec); | |
474 | if (r == 0) { | |
475 | val = utime_t(epoch, nsec); | |
476 | } else { | |
477 | throw JSONDecoder::err("failed to decode utime_t"); | |
478 | } | |
479 | } | |
480 | ||
f67539c2 TL |
481 | void decode_json_obj(ceph::real_time& val, JSONObj *obj) |
482 | { | |
483 | const std::string& s = obj->get_data(); | |
484 | uint64_t epoch; | |
485 | uint64_t nsec; | |
486 | int r = utime_t::parse_date(s, &epoch, &nsec); | |
487 | if (r == 0) { | |
488 | using namespace std::chrono; | |
489 | val = real_time{seconds(epoch) + nanoseconds(nsec)}; | |
490 | } else { | |
491 | throw JSONDecoder::err("failed to decode real_time"); | |
492 | } | |
493 | } | |
494 | ||
495 | void decode_json_obj(ceph::coarse_real_time& val, JSONObj *obj) | |
496 | { | |
497 | const std::string& s = obj->get_data(); | |
498 | uint64_t epoch; | |
499 | uint64_t nsec; | |
500 | int r = utime_t::parse_date(s, &epoch, &nsec); | |
501 | if (r == 0) { | |
502 | using namespace std::chrono; | |
503 | val = coarse_real_time{seconds(epoch) + nanoseconds(nsec)}; | |
504 | } else { | |
505 | throw JSONDecoder::err("failed to decode coarse_real_time"); | |
506 | } | |
507 | } | |
508 | ||
509 | void decode_json_obj(ceph_dir_layout& i, JSONObj *obj){ | |
510 | ||
511 | unsigned tmp; | |
512 | JSONDecoder::decode_json("dir_hash", tmp, obj, true); | |
513 | i.dl_dir_hash = tmp; | |
514 | JSONDecoder::decode_json("unused1", tmp, obj, true); | |
515 | i.dl_unused1 = tmp; | |
516 | JSONDecoder::decode_json("unused2", tmp, obj, true); | |
517 | i.dl_unused2 = tmp; | |
518 | JSONDecoder::decode_json("unused3", tmp, obj, true); | |
519 | i.dl_unused3 = tmp; | |
520 | } | |
521 | ||
7c673cae FG |
522 | void encode_json(const char *name, const string& val, Formatter *f) |
523 | { | |
524 | f->dump_string(name, val); | |
525 | } | |
526 | ||
527 | void encode_json(const char *name, const char *val, Formatter *f) | |
528 | { | |
529 | f->dump_string(name, val); | |
530 | } | |
531 | ||
532 | void encode_json(const char *name, bool val, Formatter *f) | |
533 | { | |
534 | string s; | |
535 | if (val) | |
536 | s = "true"; | |
537 | else | |
538 | s = "false"; | |
539 | ||
540 | f->dump_string(name, s); | |
541 | } | |
542 | ||
543 | void encode_json(const char *name, int val, Formatter *f) | |
544 | { | |
545 | f->dump_int(name, val); | |
546 | } | |
547 | ||
548 | void encode_json(const char *name, long val, Formatter *f) | |
549 | { | |
550 | f->dump_int(name, val); | |
551 | } | |
552 | ||
553 | void encode_json(const char *name, unsigned val, Formatter *f) | |
554 | { | |
555 | f->dump_unsigned(name, val); | |
556 | } | |
557 | ||
558 | void encode_json(const char *name, unsigned long val, Formatter *f) | |
559 | { | |
560 | f->dump_unsigned(name, val); | |
561 | } | |
562 | ||
563 | void encode_json(const char *name, unsigned long long val, Formatter *f) | |
564 | { | |
565 | f->dump_unsigned(name, val); | |
566 | } | |
567 | ||
568 | void encode_json(const char *name, long long val, Formatter *f) | |
569 | { | |
570 | f->dump_int(name, val); | |
571 | } | |
572 | ||
573 | void encode_json(const char *name, const utime_t& val, Formatter *f) | |
574 | { | |
575 | val.gmtime(f->dump_stream(name)); | |
576 | } | |
577 | ||
f67539c2 TL |
578 | void encode_json(const char *name, const ceph::real_time& val, Formatter *f) |
579 | { | |
580 | encode_json(name, utime_t{val}, f); | |
581 | } | |
582 | ||
583 | void encode_json(const char *name, const ceph::coarse_real_time& val, Formatter *f) | |
584 | { | |
585 | encode_json(name, utime_t{val}, f); | |
586 | } | |
587 | ||
7c673cae FG |
588 | void encode_json(const char *name, const bufferlist& bl, Formatter *f) |
589 | { | |
590 | /* need to copy data from bl, as it is const bufferlist */ | |
591 | bufferlist src = bl; | |
592 | ||
593 | bufferlist b64; | |
594 | src.encode_base64(b64); | |
595 | ||
596 | string s(b64.c_str(), b64.length()); | |
597 | ||
598 | encode_json(name, s, f); | |
599 | } | |
600 | ||
11fdf7f2 TL |
601 | |
602 | ||
603 | /* JSONFormattable */ | |
604 | ||
605 | const JSONFormattable& JSONFormattable::operator[](const string& name) const | |
606 | { | |
607 | auto i = obj.find(name); | |
608 | if (i == obj.end()) { | |
609 | return default_formattable; | |
610 | } | |
611 | return i->second; | |
612 | } | |
613 | ||
614 | const JSONFormattable& JSONFormattable::operator[](size_t index) const | |
615 | { | |
616 | if (index >= arr.size()) { | |
617 | return default_formattable; | |
618 | } | |
619 | return arr[index]; | |
620 | } | |
621 | ||
622 | JSONFormattable& JSONFormattable::operator[](const string& name) | |
623 | { | |
624 | auto i = obj.find(name); | |
625 | if (i == obj.end()) { | |
626 | return default_formattable; | |
627 | } | |
628 | return i->second; | |
629 | } | |
630 | ||
631 | JSONFormattable& JSONFormattable::operator[](size_t index) | |
632 | { | |
633 | if (index >= arr.size()) { | |
634 | return default_formattable; | |
635 | } | |
636 | return arr[index]; | |
637 | } | |
638 | ||
639 | bool JSONFormattable::exists(const string& name) const | |
640 | { | |
641 | auto i = obj.find(name); | |
642 | return (i != obj.end()); | |
643 | } | |
644 | ||
645 | bool JSONFormattable::exists(size_t index) const | |
646 | { | |
647 | return (index < arr.size()); | |
648 | } | |
649 | ||
650 | bool JSONFormattable::find(const string& name, string *val) const | |
651 | { | |
652 | auto i = obj.find(name); | |
653 | if (i == obj.end()) { | |
654 | return false; | |
655 | } | |
656 | *val = i->second.val(); | |
657 | return true; | |
658 | } | |
659 | ||
660 | int JSONFormattable::val_int() const { | |
661 | return atoi(value.str.c_str()); | |
662 | } | |
663 | ||
664 | long JSONFormattable::val_long() const { | |
665 | return atol(value.str.c_str()); | |
666 | } | |
667 | ||
668 | long long JSONFormattable::val_long_long() const { | |
669 | return atoll(value.str.c_str()); | |
670 | } | |
671 | ||
672 | bool JSONFormattable::val_bool() const { | |
673 | return (boost::iequals(value.str, "true") || | |
674 | boost::iequals(value.str, "on") || | |
675 | boost::iequals(value.str, "yes") || | |
676 | boost::iequals(value.str, "1")); | |
677 | } | |
678 | ||
679 | string JSONFormattable::def(const string& def_val) const { | |
680 | if (type == FMT_NONE) { | |
681 | return def_val; | |
682 | } | |
683 | return val(); | |
684 | } | |
685 | ||
686 | int JSONFormattable::def(int def_val) const { | |
687 | if (type == FMT_NONE) { | |
688 | return def_val; | |
689 | } | |
690 | return val_int(); | |
691 | } | |
692 | ||
693 | bool JSONFormattable::def(bool def_val) const { | |
694 | if (type == FMT_NONE) { | |
695 | return def_val; | |
696 | } | |
697 | return val_bool(); | |
698 | } | |
699 | ||
700 | string JSONFormattable::get(const string& name, const string& def_val) const | |
701 | { | |
702 | return (*this)[name].def(def_val); | |
703 | } | |
704 | ||
705 | int JSONFormattable::get_int(const string& name, int def_val) const | |
706 | { | |
707 | return (*this)[name].def(def_val); | |
708 | } | |
709 | ||
710 | bool JSONFormattable::get_bool(const string& name, bool def_val) const | |
711 | { | |
712 | return (*this)[name].def(def_val); | |
713 | } | |
714 | ||
715 | struct field_entity { | |
716 | bool is_obj{false}; /* either obj field or array entity */ | |
717 | string name; /* if obj */ | |
718 | int index{0}; /* if array */ | |
719 | bool append{false}; | |
720 | ||
721 | field_entity() {} | |
722 | explicit field_entity(const string& n) : is_obj(true), name(n) {} | |
723 | explicit field_entity(int i) : is_obj(false), index(i) {} | |
724 | }; | |
725 | ||
726 | static int parse_entity(const string& s, vector<field_entity> *result) | |
727 | { | |
728 | size_t ofs = 0; | |
729 | ||
730 | while (ofs < s.size()) { | |
731 | size_t next_arr = s.find('[', ofs); | |
732 | if (next_arr == string::npos) { | |
733 | if (ofs != 0) { | |
734 | return -EINVAL; | |
735 | } | |
736 | result->push_back(field_entity(s)); | |
737 | return 0; | |
738 | } | |
739 | if (next_arr > ofs) { | |
740 | string field = s.substr(ofs, next_arr - ofs); | |
741 | result->push_back(field_entity(field)); | |
742 | ofs = next_arr; | |
743 | } | |
744 | size_t end_arr = s.find(']', next_arr + 1); | |
745 | if (end_arr == string::npos) { | |
746 | return -EINVAL; | |
747 | } | |
748 | ||
749 | string index_str = s.substr(next_arr + 1, end_arr - next_arr - 1); | |
750 | ||
751 | ofs = end_arr + 1; | |
752 | ||
753 | if (!index_str.empty()) { | |
754 | result->push_back(field_entity(atoi(index_str.c_str()))); | |
755 | } else { | |
756 | field_entity f; | |
757 | f.append = true; | |
758 | result->push_back(f); | |
759 | } | |
760 | } | |
761 | return 0; | |
762 | } | |
763 | ||
764 | static bool is_numeric(const string& val) | |
765 | { | |
766 | try { | |
767 | boost::lexical_cast<double>(val); | |
768 | } catch (const boost::bad_lexical_cast& e) { | |
769 | return false; | |
770 | } | |
771 | return true; | |
772 | } | |
773 | ||
774 | int JSONFormattable::set(const string& name, const string& val) | |
775 | { | |
776 | boost::escaped_list_separator<char> els('\\', '.', '"'); | |
777 | boost::tokenizer<boost::escaped_list_separator<char> > tok(name, els); | |
778 | ||
779 | JSONFormattable *f = this; | |
780 | ||
781 | JSONParser jp; | |
782 | ||
783 | bool is_valid_json = jp.parse(val.c_str(), val.size()); | |
784 | ||
785 | for (const auto& i : tok) { | |
786 | vector<field_entity> v; | |
787 | int ret = parse_entity(i, &v); | |
788 | if (ret < 0) { | |
789 | return ret; | |
790 | } | |
791 | for (const auto& vi : v) { | |
792 | if (f->type == FMT_NONE) { | |
793 | if (vi.is_obj) { | |
794 | f->type = FMT_OBJ; | |
795 | } else { | |
796 | f->type = FMT_ARRAY; | |
797 | } | |
798 | } | |
799 | ||
800 | if (f->type == FMT_OBJ) { | |
801 | if (!vi.is_obj) { | |
802 | return -EINVAL; | |
803 | } | |
804 | f = &f->obj[vi.name]; | |
805 | } else if (f->type == FMT_ARRAY) { | |
806 | if (vi.is_obj) { | |
807 | return -EINVAL; | |
808 | } | |
809 | int index = vi.index; | |
810 | if (vi.append) { | |
811 | index = f->arr.size(); | |
812 | } else if (index < 0) { | |
813 | index = f->arr.size() + index; | |
814 | if (index < 0) { | |
815 | return -EINVAL; /* out of bounds */ | |
816 | } | |
817 | } | |
818 | if ((size_t)index >= f->arr.size()) { | |
819 | f->arr.resize(index + 1); | |
820 | } | |
821 | f = &f->arr[index]; | |
822 | } | |
823 | } | |
824 | } | |
825 | ||
826 | if (is_valid_json) { | |
827 | f->decode_json(&jp); | |
828 | } else { | |
829 | f->type = FMT_VALUE; | |
830 | f->value.set(val, !is_numeric(val)); | |
831 | } | |
832 | ||
833 | return 0; | |
834 | } | |
835 | ||
836 | int JSONFormattable::erase(const string& name) | |
837 | { | |
838 | boost::escaped_list_separator<char> els('\\', '.', '"'); | |
839 | boost::tokenizer<boost::escaped_list_separator<char> > tok(name, els); | |
840 | ||
841 | JSONFormattable *f = this; | |
842 | JSONFormattable *parent = nullptr; | |
843 | field_entity last_entity; | |
844 | ||
845 | for (auto& i : tok) { | |
846 | vector<field_entity> v; | |
847 | int ret = parse_entity(i, &v); | |
848 | if (ret < 0) { | |
849 | return ret; | |
850 | } | |
851 | for (const auto& vi : v) { | |
852 | if (f->type == FMT_NONE || | |
853 | f->type == FMT_VALUE) { | |
854 | if (vi.is_obj) { | |
855 | f->type = FMT_OBJ; | |
856 | } else { | |
857 | f->type = FMT_ARRAY; | |
858 | } | |
859 | } | |
860 | ||
861 | parent = f; | |
862 | ||
863 | if (f->type == FMT_OBJ) { | |
864 | if (!vi.is_obj) { | |
865 | return -EINVAL; | |
866 | } | |
867 | auto iter = f->obj.find(vi.name); | |
868 | if (iter == f->obj.end()) { | |
869 | return 0; /* nothing to erase */ | |
870 | } | |
871 | f = &iter->second; | |
872 | } else if (f->type == FMT_ARRAY) { | |
873 | if (vi.is_obj) { | |
874 | return -EINVAL; | |
875 | } | |
876 | int index = vi.index; | |
877 | if (index < 0) { | |
878 | index = f->arr.size() + index; | |
879 | if (index < 0) { /* out of bounds, nothing to remove */ | |
880 | return 0; | |
881 | } | |
882 | } | |
883 | if ((size_t)index >= f->arr.size()) { | |
884 | return 0; /* index beyond array boundaries */ | |
885 | } | |
886 | f = &f->arr[index]; | |
887 | } | |
888 | last_entity = vi; | |
889 | } | |
890 | } | |
891 | ||
892 | if (!parent) { | |
893 | *this = JSONFormattable(); /* erase everything */ | |
894 | } else { | |
895 | if (last_entity.is_obj) { | |
896 | parent->obj.erase(last_entity.name); | |
897 | } else { | |
898 | int index = (last_entity.index >= 0 ? last_entity.index : parent->arr.size() + last_entity.index); | |
899 | if (index < 0 || (size_t)index >= parent->arr.size()) { | |
900 | return 0; | |
901 | } | |
902 | parent->arr.erase(parent->arr.begin() + index); | |
903 | } | |
904 | } | |
905 | ||
906 | return 0; | |
907 | } | |
908 | ||
909 | void JSONFormattable::derive_from(const JSONFormattable& parent) | |
910 | { | |
911 | for (auto& o : parent.obj) { | |
912 | if (obj.find(o.first) == obj.end()) { | |
913 | obj[o.first] = o.second; | |
914 | } | |
915 | } | |
916 | } | |
917 | ||
918 | void encode_json(const char *name, const JSONFormattable& v, Formatter *f) | |
919 | { | |
920 | v.encode_json(name, f); | |
921 | } | |
922 | ||
923 | void JSONFormattable::encode_json(const char *name, Formatter *f) const | |
924 | { | |
925 | switch (type) { | |
926 | case JSONFormattable::FMT_VALUE: | |
927 | ::encode_json(name, value, f); | |
928 | break; | |
929 | case JSONFormattable::FMT_ARRAY: | |
930 | ::encode_json(name, arr, f); | |
931 | break; | |
932 | case JSONFormattable::FMT_OBJ: | |
933 | f->open_object_section(name); | |
934 | for (auto iter : obj) { | |
935 | ::encode_json(iter.first.c_str(), iter.second, f); | |
936 | } | |
937 | f->close_section(); | |
938 | break; | |
939 | case JSONFormattable::FMT_NONE: | |
940 | break; | |
941 | } | |
942 | } | |
943 | ||
9f95a23c | 944 | bool JSONFormattable::handle_value(std::string_view name, std::string_view s, bool quoted) { |
11fdf7f2 TL |
945 | JSONFormattable *new_val; |
946 | if (cur_enc->is_array()) { | |
947 | cur_enc->arr.push_back(JSONFormattable()); | |
948 | new_val = &cur_enc->arr.back(); | |
949 | } else { | |
950 | cur_enc->set_type(JSONFormattable::FMT_OBJ); | |
9f95a23c | 951 | new_val = &cur_enc->obj[string{name}]; |
11fdf7f2 TL |
952 | } |
953 | new_val->set_type(JSONFormattable::FMT_VALUE); | |
954 | new_val->value.set(s, quoted); | |
955 | ||
956 | return false; | |
957 | } | |
9f95a23c TL |
958 | |
959 | bool JSONFormattable::handle_open_section(std::string_view name, | |
960 | const char *ns, | |
961 | bool section_is_array) { | |
11fdf7f2 TL |
962 | if (cur_enc->is_array()) { |
963 | cur_enc->arr.push_back(JSONFormattable()); | |
964 | cur_enc = &cur_enc->arr.back(); | |
965 | } else if (enc_stack.size() > 1) { | |
966 | /* only open a new section if already nested, | |
967 | * otherwise root is the container | |
968 | */ | |
9f95a23c | 969 | cur_enc = &cur_enc->obj[string{name}]; |
11fdf7f2 TL |
970 | } |
971 | enc_stack.push_back(cur_enc); | |
972 | ||
973 | if (section_is_array) { | |
974 | cur_enc->set_type(JSONFormattable::FMT_ARRAY); | |
975 | } else { | |
976 | cur_enc->set_type(JSONFormattable::FMT_OBJ); | |
977 | } | |
978 | ||
979 | return false; /* continue processing */ | |
980 | } | |
981 | ||
982 | bool JSONFormattable::handle_close_section() { | |
983 | if (enc_stack.size() <= 1) { | |
984 | return false; | |
985 | } | |
986 | ||
987 | enc_stack.pop_back(); | |
988 | cur_enc = enc_stack.back(); | |
989 | return false; /* continue processing */ | |
990 | } | |
991 |