1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include "assert.h" |
6 |
#include "string.h" |
7 |
#include "stdlib.h" |
8 |
|
9 |
#define F_ASCII 0x00000001 |
10 |
#define F_UTF8 0x00000002 |
11 |
#define F_INDENT 0x00000004 |
12 |
#define F_CANONICAL 0x00000008 |
13 |
#define F_SPACE_BEFORE 0x00000010 |
14 |
#define F_SPACE_AFTER 0x00000020 |
15 |
#define F_JSON_RPC 0x00000040 |
16 |
|
17 |
#define F_DEFAULT 0 |
18 |
|
19 |
#define INIT_SIZE 32 // initial scalar size to be allocated |
20 |
|
21 |
#define SB do { |
22 |
#define SE } while (0) |
23 |
|
24 |
static HV *json_stash; |
25 |
|
26 |
// structure used for encoding JSON |
27 |
typedef struct |
28 |
{ |
29 |
char *cur; |
30 |
STRLEN len; // SvLEN (sv) |
31 |
char *end; // SvEND (sv) |
32 |
SV *sv; |
33 |
UV flags; |
34 |
int max_recurse; |
35 |
int indent; |
36 |
} enc_t; |
37 |
|
38 |
// structure used for decoding JSON |
39 |
typedef struct |
40 |
{ |
41 |
char *cur; |
42 |
char *end; |
43 |
char *err; |
44 |
UV flags; |
45 |
} dec_t; |
46 |
|
47 |
static UV * |
48 |
SvJSON (SV *sv) |
49 |
{ |
50 |
if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
51 |
croak ("object is not of type JSON::XS"); |
52 |
|
53 |
return &SvUVX (SvRV (sv)); |
54 |
} |
55 |
|
56 |
///////////////////////////////////////////////////////////////////////////// |
57 |
|
58 |
static void |
59 |
need (enc_t *enc, STRLEN len) |
60 |
{ |
61 |
if (enc->cur + len >= enc->end) |
62 |
{ |
63 |
STRLEN cur = enc->cur - SvPVX (enc->sv); |
64 |
SvGROW (enc->sv, cur + len + 1); |
65 |
enc->cur = SvPVX (enc->sv) + cur; |
66 |
enc->end = SvEND (enc->sv); |
67 |
} |
68 |
} |
69 |
|
70 |
static void |
71 |
encode_ch (enc_t *enc, char ch) |
72 |
{ |
73 |
need (enc, 1); |
74 |
*enc->cur++ = ch; |
75 |
} |
76 |
|
77 |
static void |
78 |
encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
79 |
{ |
80 |
char *end = str + len; |
81 |
|
82 |
while (str < end) |
83 |
{ |
84 |
unsigned char ch = *(unsigned char *)str; |
85 |
if (ch >= 0x20 && ch < 0x80) // most common case |
86 |
{ |
87 |
*enc->cur++ = ch; |
88 |
str++; |
89 |
} |
90 |
else |
91 |
{ |
92 |
STRLEN clen; |
93 |
UV uch; |
94 |
|
95 |
if (is_utf8) |
96 |
{ |
97 |
uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
98 |
if (clen < 0) |
99 |
croak ("malformed UTF-8 character in string, cannot convert to JSON"); |
100 |
} |
101 |
else |
102 |
{ |
103 |
uch = ch; |
104 |
clen = 1; |
105 |
} |
106 |
|
107 |
need (enc, len += 6); |
108 |
|
109 |
if (uch < 0xa0 || enc->flags & F_ASCII) |
110 |
{ |
111 |
if (uch > 0xFFFFUL) |
112 |
{ |
113 |
len += 6; |
114 |
need (enc, len += 6); |
115 |
sprintf (enc->cur, "\\u%04x\\u%04x", |
116 |
(uch - 0x10000) / 0x400 + 0xD800, |
117 |
(uch - 0x10000) % 0x400 + 0xDC00); |
118 |
enc->cur += 12; |
119 |
} |
120 |
else |
121 |
{ |
122 |
sprintf (enc->cur, "\\u%04x", uch); |
123 |
enc->cur += 6; |
124 |
} |
125 |
} |
126 |
else if (is_utf8) |
127 |
{ |
128 |
memcpy (enc->cur, str, clen); |
129 |
enc->cur += clen; |
130 |
} |
131 |
else |
132 |
enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
133 |
|
134 |
str += clen; |
135 |
} |
136 |
|
137 |
--len; |
138 |
} |
139 |
} |
140 |
|
141 |
#define INDENT SB \ |
142 |
if (enc->flags & F_INDENT) \ |
143 |
{ \ |
144 |
int i_; \ |
145 |
need (enc, enc->indent); \ |
146 |
for (i_ = enc->indent * 3; i_--; )\ |
147 |
encode_ch (enc, ' '); \ |
148 |
} \ |
149 |
SE |
150 |
|
151 |
#define SPACE SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, ' '); } SE |
152 |
#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE |
153 |
#define COMMA SB \ |
154 |
encode_ch (enc, ','); \ |
155 |
if (enc->flags & F_INDENT) \ |
156 |
NL; \ |
157 |
else if (enc->flags & F_SPACE_AFTER) \ |
158 |
SPACE; \ |
159 |
SE |
160 |
|
161 |
static void encode_sv (enc_t *enc, SV *sv); |
162 |
|
163 |
static void |
164 |
encode_av (enc_t *enc, AV *av) |
165 |
{ |
166 |
int i, len = av_len (av); |
167 |
|
168 |
encode_ch (enc, '['); NL; |
169 |
++enc->indent; |
170 |
|
171 |
for (i = 0; i <= len; ++i) |
172 |
{ |
173 |
INDENT; |
174 |
encode_sv (enc, *av_fetch (av, i, 0)); |
175 |
|
176 |
if (i < len) |
177 |
COMMA; |
178 |
} |
179 |
|
180 |
NL; |
181 |
|
182 |
--enc->indent; |
183 |
INDENT; encode_ch (enc, ']'); |
184 |
} |
185 |
|
186 |
static void |
187 |
encode_he (enc_t *enc, HE *he) |
188 |
{ |
189 |
encode_ch (enc, '"'); |
190 |
|
191 |
if (HeKLEN (he) == HEf_SVKEY) |
192 |
{ |
193 |
SV *sv = HeSVKEY (he); |
194 |
STRLEN len; |
195 |
char *str = SvPV (sv, len); |
196 |
|
197 |
encode_str (enc, str, len, SvUTF8 (sv)); |
198 |
} |
199 |
else |
200 |
encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
201 |
|
202 |
encode_ch (enc, '"'); |
203 |
|
204 |
if (enc->flags & F_SPACE_BEFORE) SPACE; |
205 |
encode_ch (enc, ':'); |
206 |
if (enc->flags & F_SPACE_AFTER ) SPACE; |
207 |
encode_sv (enc, HeVAL (he)); |
208 |
} |
209 |
|
210 |
// compare hash entries, used when all keys are bytestrings |
211 |
static int |
212 |
he_cmp_fast (const void *a_, const void *b_) |
213 |
{ |
214 |
int cmp; |
215 |
|
216 |
HE *a = *(HE **)a_; |
217 |
HE *b = *(HE **)b_; |
218 |
|
219 |
STRLEN la = HeKLEN (a); |
220 |
STRLEN lb = HeKLEN (b); |
221 |
|
222 |
if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
223 |
cmp = la < lb ? -1 : la == lb ? 0 : 1; |
224 |
|
225 |
return cmp; |
226 |
} |
227 |
|
228 |
// compare hash entries, used when some keys are sv's or utf-x |
229 |
static int |
230 |
he_cmp_slow (const void *a, const void *b) |
231 |
{ |
232 |
return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
233 |
} |
234 |
|
235 |
static void |
236 |
encode_hv (enc_t *enc, HV *hv) |
237 |
{ |
238 |
int count, i; |
239 |
|
240 |
encode_ch (enc, '{'); NL; ++enc->indent; |
241 |
|
242 |
if ((count = hv_iterinit (hv))) |
243 |
{ |
244 |
// for canonical output we have to sort by keys first |
245 |
// actually, this is mostly due to the stupid so-called |
246 |
// security workaround added somewhere in 5.8.x. |
247 |
// that randomises hash orderings |
248 |
if (enc->flags & F_CANONICAL) |
249 |
{ |
250 |
HE *he, *hes [count]; |
251 |
int fast = 1; |
252 |
|
253 |
i = 0; |
254 |
while ((he = hv_iternext (hv))) |
255 |
{ |
256 |
hes [i++] = he; |
257 |
if (HeKLEN (he) < 0 || HeKUTF8 (he)) |
258 |
fast = 0; |
259 |
} |
260 |
|
261 |
assert (i == count); |
262 |
|
263 |
if (fast) |
264 |
qsort (hes, count, sizeof (HE *), he_cmp_fast); |
265 |
else |
266 |
{ |
267 |
// hack to disable "use bytes" |
268 |
COP *oldcop = PL_curcop, cop; |
269 |
cop.op_private = 0; |
270 |
PL_curcop = &cop; |
271 |
|
272 |
SAVETMPS; |
273 |
qsort (hes, count, sizeof (HE *), he_cmp_slow); |
274 |
FREETMPS; |
275 |
|
276 |
PL_curcop = oldcop; |
277 |
} |
278 |
|
279 |
for (i = 0; i < count; ++i) |
280 |
{ |
281 |
INDENT; |
282 |
encode_he (enc, hes [i]); |
283 |
|
284 |
if (i < count - 1) |
285 |
COMMA; |
286 |
} |
287 |
|
288 |
NL; |
289 |
} |
290 |
else |
291 |
{ |
292 |
SV *sv; |
293 |
HE *he = hv_iternext (hv); |
294 |
|
295 |
for (;;) |
296 |
{ |
297 |
INDENT; |
298 |
encode_he (enc, he); |
299 |
|
300 |
if (!(he = hv_iternext (hv))) |
301 |
break; |
302 |
|
303 |
COMMA; |
304 |
} |
305 |
|
306 |
NL; |
307 |
} |
308 |
} |
309 |
|
310 |
--enc->indent; INDENT; encode_ch (enc, '}'); |
311 |
} |
312 |
|
313 |
static void |
314 |
encode_sv (enc_t *enc, SV *sv) |
315 |
{ |
316 |
if (SvPOKp (sv)) |
317 |
{ |
318 |
STRLEN len; |
319 |
char *str = SvPV (sv, len); |
320 |
encode_ch (enc, '"'); |
321 |
encode_str (enc, str, len, SvUTF8 (sv)); |
322 |
encode_ch (enc, '"'); |
323 |
} |
324 |
else if (SvNOKp (sv)) |
325 |
{ |
326 |
need (enc, NV_DIG + 32); |
327 |
Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
328 |
enc->cur += strlen (enc->cur); |
329 |
} |
330 |
else if (SvIOKp (sv)) |
331 |
{ |
332 |
need (enc, 64); |
333 |
enc->cur += |
334 |
SvIsUV(sv) |
335 |
? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
336 |
: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
337 |
} |
338 |
else if (SvROK (sv)) |
339 |
{ |
340 |
if (!--enc->max_recurse) |
341 |
croak ("data structure too deep (hit recursion limit)"); |
342 |
|
343 |
sv = SvRV (sv); |
344 |
|
345 |
switch (SvTYPE (sv)) |
346 |
{ |
347 |
case SVt_PVAV: encode_av (enc, (AV *)sv); break; |
348 |
case SVt_PVHV: encode_hv (enc, (HV *)sv); break; |
349 |
|
350 |
default: |
351 |
croak ("JSON can only represent references to arrays or hashes"); |
352 |
} |
353 |
} |
354 |
else if (!SvOK (sv)) |
355 |
encode_str (enc, "null", 4, 0); |
356 |
else |
357 |
croak ("encountered perl type that JSON cannot handle"); |
358 |
} |
359 |
|
360 |
static SV * |
361 |
encode_json (SV *scalar, UV flags) |
362 |
{ |
363 |
enc_t enc; |
364 |
enc.flags = flags; |
365 |
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
366 |
enc.cur = SvPVX (enc.sv); |
367 |
enc.end = SvEND (enc.sv); |
368 |
enc.max_recurse = 0; |
369 |
enc.indent = 0; |
370 |
|
371 |
SvPOK_only (enc.sv); |
372 |
encode_sv (&enc, scalar); |
373 |
|
374 |
if (!(flags & (F_ASCII | F_UTF8))) |
375 |
SvUTF8_on (enc.sv); |
376 |
|
377 |
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
378 |
return enc.sv; |
379 |
} |
380 |
|
381 |
///////////////////////////////////////////////////////////////////////////// |
382 |
|
383 |
#define WS \ |
384 |
for (;;) \ |
385 |
{ \ |
386 |
char ch = *dec->cur; \ |
387 |
if (ch > 0x20 \ |
388 |
|| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ |
389 |
break; \ |
390 |
++dec->cur; \ |
391 |
} |
392 |
|
393 |
#define ERR(reason) SB dec->err = reason; goto fail; SE |
394 |
#define EXPECT_CH(ch) SB \ |
395 |
if (*dec->cur != ch) \ |
396 |
ERR (# ch " expected"); \ |
397 |
++dec->cur; \ |
398 |
SE |
399 |
|
400 |
static SV *decode_sv (dec_t *dec); |
401 |
|
402 |
#define APPEND_CH(ch) SB \ |
403 |
SvGROW (sv, cur + 1 + 1); \ |
404 |
SvPVX (sv)[cur++] = (ch); \ |
405 |
SE |
406 |
|
407 |
static signed char decode_hexdigit[256]; |
408 |
|
409 |
static UV |
410 |
decode_4hex (dec_t *dec) |
411 |
{ |
412 |
signed char d1, d2, d3, d4; |
413 |
|
414 |
d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]]; |
415 |
if (d1 < 0) ERR ("four hexadecimal digits expected"); |
416 |
d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]]; |
417 |
if (d2 < 0) ERR ("four hexadecimal digits expected"); |
418 |
d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]]; |
419 |
if (d3 < 0) ERR ("four hexadecimal digits expected"); |
420 |
d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]]; |
421 |
if (d4 < 0) ERR ("four hexadecimal digits expected"); |
422 |
|
423 |
dec->cur += 4; |
424 |
|
425 |
return ((UV)d1) << 12 |
426 |
| ((UV)d2) << 8 |
427 |
| ((UV)d3) << 4 |
428 |
| ((UV)d4); |
429 |
|
430 |
fail: |
431 |
return (UV)-1; |
432 |
} |
433 |
|
434 |
static SV * |
435 |
decode_str (dec_t *dec) |
436 |
{ |
437 |
SV *sv = NEWSV (0,2); |
438 |
STRLEN cur = 0; |
439 |
int utf8 = 0; |
440 |
|
441 |
for (;;) |
442 |
{ |
443 |
unsigned char ch = *(unsigned char *)dec->cur; |
444 |
|
445 |
if (ch == '"') |
446 |
break; |
447 |
else if (ch == '\\') |
448 |
{ |
449 |
switch (*++dec->cur) |
450 |
{ |
451 |
case '\\': |
452 |
case '/': |
453 |
case '"': APPEND_CH (*dec->cur++); break; |
454 |
|
455 |
case 'b': APPEND_CH ('\010'); ++dec->cur; break; |
456 |
case 't': APPEND_CH ('\011'); ++dec->cur; break; |
457 |
case 'n': APPEND_CH ('\012'); ++dec->cur; break; |
458 |
case 'f': APPEND_CH ('\014'); ++dec->cur; break; |
459 |
case 'r': APPEND_CH ('\015'); ++dec->cur; break; |
460 |
|
461 |
case 'u': |
462 |
{ |
463 |
UV lo, hi; |
464 |
++dec->cur; |
465 |
|
466 |
hi = decode_4hex (dec); |
467 |
if (hi == (UV)-1) |
468 |
goto fail; |
469 |
|
470 |
// possibly a surrogate pair |
471 |
if (hi >= 0xd800 && hi < 0xdc00) |
472 |
{ |
473 |
if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
474 |
ERR ("illegal surrogate character"); |
475 |
|
476 |
dec->cur += 2; |
477 |
|
478 |
lo = decode_4hex (dec); |
479 |
if (lo == (UV)-1) |
480 |
goto fail; |
481 |
|
482 |
if (lo < 0xdc00 || lo >= 0xe000) |
483 |
ERR ("surrogate pair expected"); |
484 |
|
485 |
hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
486 |
} |
487 |
else if (lo >= 0xdc00 && lo < 0xe000) |
488 |
ERR ("illegal surrogate character"); |
489 |
|
490 |
if (hi >= 0x80) |
491 |
{ |
492 |
utf8 = 1; |
493 |
|
494 |
SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits |
495 |
cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv); |
496 |
} |
497 |
else |
498 |
APPEND_CH (hi); |
499 |
} |
500 |
break; |
501 |
} |
502 |
} |
503 |
else if (ch >= 0x20 && ch <= 0x7f) |
504 |
APPEND_CH (*dec->cur++); |
505 |
else if (ch >= 0x80) |
506 |
{ |
507 |
STRLEN clen; |
508 |
UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
509 |
if (clen < 0) |
510 |
ERR ("malformed UTF-8 character in string, cannot convert to JSON"); |
511 |
|
512 |
SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits |
513 |
memcpy (SvPVX (sv) + cur, dec->cur, clen); |
514 |
dec->cur += clen; |
515 |
} |
516 |
else |
517 |
ERR ("invalid character encountered"); |
518 |
} |
519 |
|
520 |
++dec->cur; |
521 |
|
522 |
SvPOK_only (sv); |
523 |
|
524 |
SvCUR_set (sv, cur); |
525 |
*SvEND (sv) = 0; |
526 |
|
527 |
if (utf8) |
528 |
SvUTF8_on (sv); |
529 |
|
530 |
return sv; |
531 |
|
532 |
fail: |
533 |
SvREFCNT_dec (sv); |
534 |
return 0; |
535 |
} |
536 |
|
537 |
static SV * |
538 |
decode_num (dec_t *dec) |
539 |
{ |
540 |
int is_nv = 0; |
541 |
char *start = dec->cur; |
542 |
|
543 |
// [minus] |
544 |
if (*dec->cur == '-') |
545 |
++dec->cur; |
546 |
|
547 |
if (*dec->cur == '0') |
548 |
{ |
549 |
++dec->cur; |
550 |
if (*dec->cur >= '0' && *dec->cur <= '9') |
551 |
ERR ("malformed number (leading zero must not be followed by another digit)"); |
552 |
} |
553 |
|
554 |
// int |
555 |
while (*dec->cur >= '0' && *dec->cur <= '9') |
556 |
++dec->cur; |
557 |
|
558 |
// [frac] |
559 |
if (*dec->cur == '.') |
560 |
{ |
561 |
is_nv = 1; |
562 |
|
563 |
do |
564 |
{ |
565 |
++dec->cur; |
566 |
} |
567 |
while (*dec->cur >= '0' && *dec->cur <= '9'); |
568 |
} |
569 |
|
570 |
// [exp] |
571 |
if (*dec->cur == 'e' || *dec->cur == 'E') |
572 |
{ |
573 |
is_nv = 1; |
574 |
|
575 |
++dec->cur; |
576 |
if (*dec->cur == '-' || *dec->cur == '+') |
577 |
++dec->cur; |
578 |
|
579 |
while (*dec->cur >= '0' && *dec->cur <= '9') |
580 |
++dec->cur; |
581 |
} |
582 |
|
583 |
if (!is_nv) |
584 |
{ |
585 |
UV uv; |
586 |
int numtype = grok_number (start, dec->cur - start, &uv); |
587 |
if (numtype & IS_NUMBER_IN_UV) |
588 |
if (numtype & IS_NUMBER_NEG) |
589 |
{ |
590 |
if (uv < (UV)IV_MIN) |
591 |
return newSViv (-(IV)uv); |
592 |
} |
593 |
else |
594 |
return newSVuv (uv); |
595 |
} |
596 |
|
597 |
return newSVnv (Atof (start)); |
598 |
|
599 |
fail: |
600 |
return 0; |
601 |
} |
602 |
|
603 |
static SV * |
604 |
decode_av (dec_t *dec) |
605 |
{ |
606 |
AV *av = newAV (); |
607 |
|
608 |
for (;;) |
609 |
{ |
610 |
SV *value; |
611 |
|
612 |
value = decode_sv (dec); |
613 |
if (!value) |
614 |
goto fail; |
615 |
|
616 |
av_push (av, value); |
617 |
|
618 |
WS; |
619 |
|
620 |
if (*dec->cur == ']') |
621 |
{ |
622 |
++dec->cur; |
623 |
break; |
624 |
} |
625 |
|
626 |
if (*dec->cur != ',') |
627 |
ERR (", or ] expected while parsing array"); |
628 |
|
629 |
++dec->cur; |
630 |
} |
631 |
|
632 |
return newRV_noinc ((SV *)av); |
633 |
|
634 |
fail: |
635 |
SvREFCNT_dec (av); |
636 |
return 0; |
637 |
} |
638 |
|
639 |
static SV * |
640 |
decode_hv (dec_t *dec) |
641 |
{ |
642 |
HV *hv = newHV (); |
643 |
|
644 |
for (;;) |
645 |
{ |
646 |
SV *key, *value; |
647 |
|
648 |
WS; EXPECT_CH ('"'); |
649 |
|
650 |
key = decode_str (dec); |
651 |
if (!key) |
652 |
goto fail; |
653 |
|
654 |
WS; EXPECT_CH (':'); |
655 |
|
656 |
value = decode_sv (dec); |
657 |
if (!value) |
658 |
{ |
659 |
SvREFCNT_dec (key); |
660 |
goto fail; |
661 |
} |
662 |
|
663 |
//TODO: optimise |
664 |
hv_store_ent (hv, key, value, 0); |
665 |
|
666 |
WS; |
667 |
|
668 |
if (*dec->cur == '}') |
669 |
{ |
670 |
++dec->cur; |
671 |
break; |
672 |
} |
673 |
|
674 |
if (*dec->cur != ',') |
675 |
ERR (", or } expected while parsing object/hash"); |
676 |
|
677 |
++dec->cur; |
678 |
} |
679 |
|
680 |
return newRV_noinc ((SV *)hv); |
681 |
|
682 |
fail: |
683 |
SvREFCNT_dec (hv); |
684 |
return 0; |
685 |
} |
686 |
|
687 |
static SV * |
688 |
decode_sv (dec_t *dec) |
689 |
{ |
690 |
WS; |
691 |
switch (*dec->cur) |
692 |
{ |
693 |
case '"': ++dec->cur; return decode_str (dec); |
694 |
case '[': ++dec->cur; return decode_av (dec); |
695 |
case '{': ++dec->cur; return decode_hv (dec); |
696 |
|
697 |
case '-': |
698 |
case '0': case '1': case '2': case '3': case '4': |
699 |
case '5': case '6': case '7': case '8': case '9': |
700 |
return decode_num (dec); |
701 |
|
702 |
case 't': |
703 |
if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
704 |
{ |
705 |
dec->cur += 4; |
706 |
return newSViv (1); |
707 |
} |
708 |
else |
709 |
ERR ("'true' expected"); |
710 |
|
711 |
break; |
712 |
|
713 |
case 'f': |
714 |
if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
715 |
{ |
716 |
dec->cur += 5; |
717 |
return newSViv (0); |
718 |
} |
719 |
else |
720 |
ERR ("'false' expected"); |
721 |
|
722 |
break; |
723 |
|
724 |
case 'n': |
725 |
if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
726 |
{ |
727 |
dec->cur += 4; |
728 |
return newSViv (1); |
729 |
} |
730 |
else |
731 |
ERR ("'null' expected"); |
732 |
|
733 |
break; |
734 |
|
735 |
default: |
736 |
ERR ("malformed json string"); |
737 |
break; |
738 |
} |
739 |
|
740 |
fail: |
741 |
return 0; |
742 |
} |
743 |
|
744 |
static SV * |
745 |
decode_json (SV *string, UV flags) |
746 |
{ |
747 |
SV *sv; |
748 |
|
749 |
if (!(flags & F_UTF8)) |
750 |
sv_utf8_upgrade (string); |
751 |
|
752 |
SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
753 |
|
754 |
dec_t dec; |
755 |
dec.flags = flags; |
756 |
dec.cur = SvPVX (string); |
757 |
dec.end = SvEND (string); |
758 |
dec.err = 0; |
759 |
|
760 |
*dec.end = 1; // invalid anywhere |
761 |
sv = decode_sv (&dec); |
762 |
*dec.end = 0; |
763 |
|
764 |
if (!sv) |
765 |
{ |
766 |
IV offset = utf8_distance (dec.cur, SvPVX (string)); |
767 |
SV *uni = sv_newmortal (); |
768 |
|
769 |
pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
770 |
croak ("%s, at character %d (%s)", |
771 |
dec.err, |
772 |
(int)offset, |
773 |
dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
774 |
} |
775 |
|
776 |
sv_dump (sv);//D |
777 |
return sv_2mortal (sv); |
778 |
} |
779 |
|
780 |
MODULE = JSON::XS PACKAGE = JSON::XS |
781 |
|
782 |
BOOT: |
783 |
{ |
784 |
int i; |
785 |
|
786 |
memset (decode_hexdigit, 0xff, 256); |
787 |
for (i = 10; i--; ) |
788 |
decode_hexdigit ['0' + i] = i; |
789 |
|
790 |
for (i = 6; --i; ) |
791 |
{ |
792 |
decode_hexdigit ['a' + i] = 10 + i; |
793 |
decode_hexdigit ['A' + i] = 10 + i; |
794 |
} |
795 |
|
796 |
json_stash = gv_stashpv ("JSON::XS", 1); |
797 |
} |
798 |
|
799 |
SV *new (char *dummy) |
800 |
CODE: |
801 |
RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
802 |
OUTPUT: |
803 |
RETVAL |
804 |
|
805 |
SV *ascii (SV *self, int enable) |
806 |
ALIAS: |
807 |
ascii = F_ASCII |
808 |
utf8 = F_UTF8 |
809 |
indent = F_INDENT |
810 |
canonical = F_CANONICAL |
811 |
space_before = F_SPACE_BEFORE |
812 |
space_after = F_SPACE_AFTER |
813 |
json_rpc = F_JSON_RPC |
814 |
CODE: |
815 |
{ |
816 |
UV *uv = SvJSON (self); |
817 |
if (enable) |
818 |
*uv |= ix; |
819 |
else |
820 |
*uv &= ~ix; |
821 |
|
822 |
RETVAL = newSVsv (self); |
823 |
} |
824 |
OUTPUT: |
825 |
RETVAL |
826 |
|
827 |
void encode (SV *self, SV *scalar) |
828 |
PPCODE: |
829 |
XPUSHs (encode_json (scalar, *SvJSON (self))); |
830 |
|
831 |
void decode (SV *self, SV *jsondata) |
832 |
PPCODE: |
833 |
XPUSHs (decode_json (jsondata, *SvJSON (self))); |
834 |
|