… | |
… | |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include "assert.h" |
5 | #include "assert.h" |
6 | #include "string.h" |
6 | #include "string.h" |
7 | #include "stdlib.h" |
7 | #include "stdlib.h" |
|
|
8 | #include "stdio.h" |
8 | |
9 | |
|
|
10 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
|
|
11 | # define snprintf _snprintf // C compilers have this in stdio.h |
|
|
12 | #endif |
|
|
13 | |
|
|
14 | // some old perls do not have this, try to make it work, no |
|
|
15 | // guarentees, though. if it breaks, you get to keep the pieces. |
|
|
16 | #ifndef UTF8_MAXBYTES |
|
|
17 | # define UTF8_MAXBYTES 13 |
|
|
18 | #endif |
|
|
19 | |
9 | #define F_ASCII 0x00000001 |
20 | #define F_ASCII 0x00000001UL |
|
|
21 | #define F_LATIN1 0x00000002UL |
10 | #define F_UTF8 0x00000002 |
22 | #define F_UTF8 0x00000004UL |
11 | #define F_INDENT 0x00000004 |
23 | #define F_INDENT 0x00000008UL |
12 | #define F_CANONICAL 0x00000008 |
24 | #define F_CANONICAL 0x00000010UL |
13 | #define F_SPACE_BEFORE 0x00000010 |
25 | #define F_SPACE_BEFORE 0x00000020UL |
14 | #define F_SPACE_AFTER 0x00000020 |
26 | #define F_SPACE_AFTER 0x00000040UL |
15 | #define F_JSON_RPC 0x00000040 |
|
|
16 | #define F_ALLOW_NONREF 0x00000080 |
27 | #define F_ALLOW_NONREF 0x00000100UL |
|
|
28 | #define F_SHRINK 0x00000200UL |
|
|
29 | #define F_ALLOW_BLESSED 0x00000400UL |
|
|
30 | #define F_CONV_BLESSED 0x00000800UL |
|
|
31 | #define F_MAXDEPTH 0xf8000000UL |
|
|
32 | #define S_MAXDEPTH 27 |
|
|
33 | #define F_MAXSIZE 0x01f00000UL |
|
|
34 | #define S_MAXSIZE 20 |
|
|
35 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
|
|
36 | |
|
|
37 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
|
|
38 | #define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE )) |
17 | |
39 | |
18 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
40 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
19 | #define F_DEFAULT 0 |
41 | #define F_DEFAULT (9UL << S_MAXDEPTH) |
20 | |
42 | |
21 | #define INIT_SIZE 32 // initial scalar size to be allocated |
43 | #define INIT_SIZE 32 // initial scalar size to be allocated |
|
|
44 | #define INDENT_STEP 3 // spaces per indentation level |
|
|
45 | |
|
|
46 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
22 | |
47 | |
23 | #define SB do { |
48 | #define SB do { |
24 | #define SE } while (0) |
49 | #define SE } while (0) |
25 | |
50 | |
26 | static HV *json_stash; |
51 | #if __GNUC__ >= 3 |
|
|
52 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
53 | # define inline inline |
|
|
54 | #else |
|
|
55 | # define expect(expr,value) (expr) |
|
|
56 | # define inline static |
|
|
57 | #endif |
|
|
58 | |
|
|
59 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
60 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
61 | |
|
|
62 | static HV *json_stash, *json_boolean_stash; // JSON::XS:: |
|
|
63 | static SV *json_true, *json_false; |
|
|
64 | |
|
|
65 | typedef struct { |
|
|
66 | U32 flags; |
|
|
67 | SV *cb_object, *cb_sk_object; |
|
|
68 | } JSON; |
|
|
69 | |
|
|
70 | ///////////////////////////////////////////////////////////////////////////// |
|
|
71 | // utility functions |
|
|
72 | |
|
|
73 | inline void |
|
|
74 | shrink (SV *sv) |
|
|
75 | { |
|
|
76 | sv_utf8_downgrade (sv, 1); |
|
|
77 | if (SvLEN (sv) > SvCUR (sv) + 1) |
|
|
78 | { |
|
|
79 | #ifdef SvPV_shrink_to_cur |
|
|
80 | SvPV_shrink_to_cur (sv); |
|
|
81 | #elif defined (SvPV_renew) |
|
|
82 | SvPV_renew (sv, SvCUR (sv) + 1); |
|
|
83 | #endif |
|
|
84 | } |
|
|
85 | } |
|
|
86 | |
|
|
87 | // decode an utf-8 character and return it, or (UV)-1 in |
|
|
88 | // case of an error. |
|
|
89 | // we special-case "safe" characters from U+80 .. U+7FF, |
|
|
90 | // but use the very good perl function to parse anything else. |
|
|
91 | // note that we never call this function for a ascii codepoints |
|
|
92 | inline UV |
|
|
93 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
|
|
94 | { |
|
|
95 | if (expect_false (s[0] > 0xdf || s[0] < 0xc2)) |
|
|
96 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
|
|
97 | else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) |
|
|
98 | { |
|
|
99 | *clen = 2; |
|
|
100 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
|
|
101 | } |
|
|
102 | else |
|
|
103 | { |
|
|
104 | *clen = (STRLEN)-1; |
|
|
105 | return (UV)-1; |
|
|
106 | } |
|
|
107 | } |
|
|
108 | |
|
|
109 | ///////////////////////////////////////////////////////////////////////////// |
|
|
110 | // encoder |
27 | |
111 | |
28 | // structure used for encoding JSON |
112 | // structure used for encoding JSON |
29 | typedef struct |
113 | typedef struct |
30 | { |
114 | { |
31 | char *cur; |
115 | char *cur; // SvPVX (sv) + current output position |
32 | STRLEN len; // SvLEN (sv) |
|
|
33 | char *end; // SvEND (sv) |
116 | char *end; // SvEND (sv) |
34 | SV *sv; |
117 | SV *sv; // result scalar |
35 | UV flags; |
118 | JSON json; |
36 | int max_recurse; |
119 | U32 indent; // indentation level |
37 | int indent; |
120 | U32 maxdepth; // max. indentation/recursion level |
38 | } enc_t; |
121 | } enc_t; |
39 | |
122 | |
40 | // structure used for decoding JSON |
123 | inline void |
41 | typedef struct |
|
|
42 | { |
|
|
43 | char *cur; |
|
|
44 | char *end; |
|
|
45 | const char *err; |
|
|
46 | UV flags; |
|
|
47 | } dec_t; |
|
|
48 | |
|
|
49 | static UV * |
|
|
50 | SvJSON (SV *sv) |
|
|
51 | { |
|
|
52 | if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
|
|
53 | croak ("object is not of type JSON::XS"); |
|
|
54 | |
|
|
55 | return &SvUVX (SvRV (sv)); |
|
|
56 | } |
|
|
57 | |
|
|
58 | ///////////////////////////////////////////////////////////////////////////// |
|
|
59 | |
|
|
60 | static void |
|
|
61 | need (enc_t *enc, STRLEN len) |
124 | need (enc_t *enc, STRLEN len) |
62 | { |
125 | { |
63 | if (enc->cur + len >= enc->end) |
126 | if (expect_false (enc->cur + len >= enc->end)) |
64 | { |
127 | { |
65 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
128 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
66 | SvGROW (enc->sv, cur + len + 1); |
129 | SvGROW (enc->sv, cur + len + 1); |
67 | enc->cur = SvPVX (enc->sv) + cur; |
130 | enc->cur = SvPVX (enc->sv) + cur; |
68 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv); |
131 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
69 | } |
132 | } |
70 | } |
133 | } |
71 | |
134 | |
72 | static void |
135 | inline void |
73 | encode_ch (enc_t *enc, char ch) |
136 | encode_ch (enc_t *enc, char ch) |
74 | { |
137 | { |
75 | need (enc, 1); |
138 | need (enc, 1); |
76 | *enc->cur++ = ch; |
139 | *enc->cur++ = ch; |
77 | } |
140 | } |
… | |
… | |
85 | |
148 | |
86 | while (str < end) |
149 | while (str < end) |
87 | { |
150 | { |
88 | unsigned char ch = *(unsigned char *)str; |
151 | unsigned char ch = *(unsigned char *)str; |
89 | |
152 | |
90 | if (ch == '"') |
153 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
91 | { |
154 | { |
|
|
155 | if (expect_false (ch == '"')) // but with slow exceptions |
|
|
156 | { |
92 | need (enc, len += 1); |
157 | need (enc, len += 1); |
93 | *enc->cur++ = '\\'; |
158 | *enc->cur++ = '\\'; |
94 | *enc->cur++ = '"'; |
159 | *enc->cur++ = '"'; |
95 | ++str; |
|
|
96 | } |
160 | } |
97 | else if (ch == '\\') |
161 | else if (expect_false (ch == '\\')) |
98 | { |
162 | { |
99 | need (enc, len += 1); |
163 | need (enc, len += 1); |
100 | *enc->cur++ = '\\'; |
164 | *enc->cur++ = '\\'; |
101 | *enc->cur++ = '\\'; |
165 | *enc->cur++ = '\\'; |
102 | ++str; |
|
|
103 | } |
166 | } |
104 | else if (ch >= 0x20 && ch < 0x80) // most common case |
167 | else |
105 | { |
|
|
106 | *enc->cur++ = ch; |
168 | *enc->cur++ = ch; |
107 | ++str; |
169 | |
108 | } |
|
|
109 | else if (ch == '\015') |
|
|
110 | { |
|
|
111 | need (enc, len += 1); |
|
|
112 | *enc->cur++ = '\\'; |
|
|
113 | *enc->cur++ = 'r'; |
|
|
114 | ++str; |
|
|
115 | } |
|
|
116 | else if (ch == '\012') |
|
|
117 | { |
|
|
118 | need (enc, len += 1); |
|
|
119 | *enc->cur++ = '\\'; |
|
|
120 | *enc->cur++ = 'n'; |
|
|
121 | ++str; |
170 | ++str; |
122 | } |
171 | } |
123 | else |
172 | else |
124 | { |
173 | { |
125 | STRLEN clen; |
174 | switch (ch) |
126 | UV uch; |
|
|
127 | |
|
|
128 | if (is_utf8) |
|
|
129 | { |
|
|
130 | uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
|
|
131 | if (clen < 0) |
|
|
132 | croak ("malformed UTF-8 character in string, cannot convert to JSON"); |
|
|
133 | } |
175 | { |
134 | else |
176 | case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
135 | { |
177 | case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
136 | uch = ch; |
178 | case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
137 | clen = 1; |
179 | case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
138 | } |
180 | case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
139 | |
181 | |
140 | if (uch < 0x80 || enc->flags & F_ASCII) |
182 | default: |
141 | { |
|
|
142 | if (uch > 0xFFFFUL) |
|
|
143 | { |
183 | { |
|
|
184 | STRLEN clen; |
|
|
185 | UV uch; |
|
|
186 | |
|
|
187 | if (is_utf8) |
|
|
188 | { |
|
|
189 | uch = decode_utf8 (str, end - str, &clen); |
|
|
190 | if (clen == (STRLEN)-1) |
|
|
191 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
|
|
192 | } |
|
|
193 | else |
|
|
194 | { |
|
|
195 | uch = ch; |
|
|
196 | clen = 1; |
|
|
197 | } |
|
|
198 | |
|
|
199 | if (uch > 0x10FFFFUL) |
|
|
200 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
201 | |
|
|
202 | if (uch < 0x80 || enc->json.flags & F_ASCII || (enc->json.flags & F_LATIN1 && uch > 0xFF)) |
|
|
203 | { |
|
|
204 | if (uch > 0xFFFFUL) |
|
|
205 | { |
144 | need (enc, len += 11); |
206 | need (enc, len += 11); |
145 | sprintf (enc->cur, "\\u%04x\\u%04x", |
207 | sprintf (enc->cur, "\\u%04x\\u%04x", |
146 | (uch - 0x10000) / 0x400 + 0xD800, |
208 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
147 | (uch - 0x10000) % 0x400 + 0xDC00); |
209 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
148 | enc->cur += 12; |
210 | enc->cur += 12; |
|
|
211 | } |
|
|
212 | else |
|
|
213 | { |
|
|
214 | static char hexdigit [16] = "0123456789abcdef"; |
|
|
215 | need (enc, len += 5); |
|
|
216 | *enc->cur++ = '\\'; |
|
|
217 | *enc->cur++ = 'u'; |
|
|
218 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
|
|
219 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
|
|
220 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
|
|
221 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
|
|
222 | } |
|
|
223 | |
|
|
224 | str += clen; |
|
|
225 | } |
|
|
226 | else if (enc->json.flags & F_LATIN1) |
|
|
227 | { |
|
|
228 | *enc->cur++ = uch; |
|
|
229 | str += clen; |
|
|
230 | } |
|
|
231 | else if (is_utf8) |
|
|
232 | { |
|
|
233 | need (enc, len += clen); |
|
|
234 | do |
|
|
235 | { |
|
|
236 | *enc->cur++ = *str++; |
|
|
237 | } |
|
|
238 | while (--clen); |
|
|
239 | } |
|
|
240 | else |
|
|
241 | { |
|
|
242 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
|
|
243 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
|
|
244 | ++str; |
|
|
245 | } |
149 | } |
246 | } |
150 | else |
|
|
151 | { |
|
|
152 | static char hexdigit [16] = "0123456789abcdef"; |
|
|
153 | need (enc, len += 5); |
|
|
154 | *enc->cur++ = '\\'; |
|
|
155 | *enc->cur++ = 'u'; |
|
|
156 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
|
|
157 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
|
|
158 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
|
|
159 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
|
|
160 | } |
|
|
161 | |
|
|
162 | str += clen; |
|
|
163 | } |
|
|
164 | else if (is_utf8) |
|
|
165 | { |
|
|
166 | need (enc, len += clen); |
|
|
167 | while (clen--) |
|
|
168 | *enc->cur++ = *str++; |
|
|
169 | } |
|
|
170 | else |
|
|
171 | { |
|
|
172 | need (enc, 10); // never more than 11 bytes needed |
|
|
173 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
|
|
174 | ++str; |
|
|
175 | } |
247 | } |
176 | } |
248 | } |
177 | |
249 | |
178 | --len; |
250 | --len; |
179 | } |
251 | } |
180 | } |
252 | } |
181 | |
253 | |
182 | #define INDENT SB \ |
254 | inline void |
|
|
255 | encode_indent (enc_t *enc) |
|
|
256 | { |
183 | if (enc->flags & F_INDENT) \ |
257 | if (enc->json.flags & F_INDENT) |
184 | { \ |
258 | { |
185 | int i_; \ |
259 | int spaces = enc->indent * INDENT_STEP; |
186 | need (enc, enc->indent); \ |
260 | |
187 | for (i_ = enc->indent * 3; i_--; )\ |
261 | need (enc, spaces); |
|
|
262 | memset (enc->cur, ' ', spaces); |
|
|
263 | enc->cur += spaces; |
|
|
264 | } |
|
|
265 | } |
|
|
266 | |
|
|
267 | inline void |
|
|
268 | encode_space (enc_t *enc) |
|
|
269 | { |
|
|
270 | need (enc, 1); |
|
|
271 | encode_ch (enc, ' '); |
|
|
272 | } |
|
|
273 | |
|
|
274 | inline void |
|
|
275 | encode_nl (enc_t *enc) |
|
|
276 | { |
|
|
277 | if (enc->json.flags & F_INDENT) |
|
|
278 | { |
|
|
279 | need (enc, 1); |
188 | encode_ch (enc, ' '); \ |
280 | encode_ch (enc, '\n'); |
189 | } \ |
281 | } |
190 | SE |
282 | } |
191 | |
283 | |
192 | #define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE |
284 | inline void |
193 | #define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE |
285 | encode_comma (enc_t *enc) |
194 | #define COMMA SB \ |
286 | { |
195 | encode_ch (enc, ','); \ |
287 | encode_ch (enc, ','); |
|
|
288 | |
196 | if (enc->flags & F_INDENT) \ |
289 | if (enc->json.flags & F_INDENT) |
197 | NL; \ |
290 | encode_nl (enc); |
198 | else if (enc->flags & F_SPACE_AFTER) \ |
291 | else if (enc->json.flags & F_SPACE_AFTER) |
199 | SPACE; \ |
292 | encode_space (enc); |
200 | SE |
293 | } |
201 | |
294 | |
202 | static void encode_sv (enc_t *enc, SV *sv); |
295 | static void encode_sv (enc_t *enc, SV *sv); |
203 | |
296 | |
204 | static void |
297 | static void |
205 | encode_av (enc_t *enc, AV *av) |
298 | encode_av (enc_t *enc, AV *av) |
206 | { |
299 | { |
207 | int i, len = av_len (av); |
300 | int i, len = av_len (av); |
208 | |
301 | |
209 | encode_ch (enc, '['); NL; |
302 | if (enc->indent >= enc->maxdepth) |
|
|
303 | croak ("data structure too deep (hit recursion limit)"); |
|
|
304 | |
|
|
305 | encode_ch (enc, '['); encode_nl (enc); |
210 | ++enc->indent; |
306 | ++enc->indent; |
211 | |
307 | |
212 | for (i = 0; i <= len; ++i) |
308 | for (i = 0; i <= len; ++i) |
213 | { |
309 | { |
214 | INDENT; |
310 | encode_indent (enc); |
215 | encode_sv (enc, *av_fetch (av, i, 0)); |
311 | encode_sv (enc, *av_fetch (av, i, 0)); |
216 | |
312 | |
217 | if (i < len) |
313 | if (i < len) |
218 | COMMA; |
314 | encode_comma (enc); |
219 | } |
315 | } |
220 | |
316 | |
221 | NL; |
317 | encode_nl (enc); |
222 | |
318 | |
223 | --enc->indent; |
319 | --enc->indent; |
224 | INDENT; encode_ch (enc, ']'); |
320 | encode_indent (enc); encode_ch (enc, ']'); |
225 | } |
321 | } |
226 | |
322 | |
227 | static void |
323 | static void |
228 | encode_he (enc_t *enc, HE *he) |
324 | encode_he (enc_t *enc, HE *he) |
229 | { |
325 | { |
… | |
… | |
243 | else |
339 | else |
244 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
340 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
245 | |
341 | |
246 | encode_ch (enc, '"'); |
342 | encode_ch (enc, '"'); |
247 | |
343 | |
248 | if (enc->flags & F_SPACE_BEFORE) SPACE; |
344 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
249 | encode_ch (enc, ':'); |
345 | encode_ch (enc, ':'); |
250 | if (enc->flags & F_SPACE_AFTER ) SPACE; |
346 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
251 | encode_sv (enc, HeVAL (he)); |
347 | encode_sv (enc, HeVAL (he)); |
252 | } |
348 | } |
253 | |
349 | |
254 | // compare hash entries, used when all keys are bytestrings |
350 | // compare hash entries, used when all keys are bytestrings |
255 | static int |
351 | static int |
… | |
… | |
261 | HE *b = *(HE **)b_; |
357 | HE *b = *(HE **)b_; |
262 | |
358 | |
263 | STRLEN la = HeKLEN (a); |
359 | STRLEN la = HeKLEN (a); |
264 | STRLEN lb = HeKLEN (b); |
360 | STRLEN lb = HeKLEN (b); |
265 | |
361 | |
266 | if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
362 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
267 | cmp = la < lb ? -1 : la == lb ? 0 : 1; |
363 | cmp = la - lb; |
268 | |
364 | |
269 | return cmp; |
365 | return cmp; |
270 | } |
366 | } |
271 | |
367 | |
272 | // compare hash entries, used when some keys are sv's or utf-x |
368 | // compare hash entries, used when some keys are sv's or utf-x |
… | |
… | |
279 | static void |
375 | static void |
280 | encode_hv (enc_t *enc, HV *hv) |
376 | encode_hv (enc_t *enc, HV *hv) |
281 | { |
377 | { |
282 | int count, i; |
378 | int count, i; |
283 | |
379 | |
|
|
380 | if (enc->indent >= enc->maxdepth) |
|
|
381 | croak ("data structure too deep (hit recursion limit)"); |
|
|
382 | |
284 | encode_ch (enc, '{'); NL; ++enc->indent; |
383 | encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
285 | |
384 | |
286 | if ((count = hv_iterinit (hv))) |
385 | if ((count = hv_iterinit (hv))) |
287 | { |
386 | { |
288 | // for canonical output we have to sort by keys first |
387 | // for canonical output we have to sort by keys first |
289 | // actually, this is mostly due to the stupid so-called |
388 | // actually, this is mostly due to the stupid so-called |
290 | // security workaround added somewhere in 5.8.x. |
389 | // security workaround added somewhere in 5.8.x. |
291 | // that randomises hash orderings |
390 | // that randomises hash orderings |
292 | if (enc->flags & F_CANONICAL) |
391 | if (enc->json.flags & F_CANONICAL) |
293 | { |
392 | { |
294 | HE *he, *hes [count]; |
|
|
295 | int fast = 1; |
393 | int fast = 1; |
|
|
394 | HE *he; |
|
|
395 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
|
|
396 | HE **hes = _alloca (count * sizeof (HE)); |
|
|
397 | #else |
|
|
398 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
|
|
399 | #endif |
296 | |
400 | |
297 | i = 0; |
401 | i = 0; |
298 | while ((he = hv_iternext (hv))) |
402 | while ((he = hv_iternext (hv))) |
299 | { |
403 | { |
300 | hes [i++] = he; |
404 | hes [i++] = he; |
… | |
… | |
306 | |
410 | |
307 | if (fast) |
411 | if (fast) |
308 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
412 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
309 | else |
413 | else |
310 | { |
414 | { |
311 | // hack to disable "use bytes" |
415 | // hack to forcefully disable "use bytes" |
312 | COP *oldcop = PL_curcop, cop; |
416 | COP cop = *PL_curcop; |
313 | cop.op_private = 0; |
417 | cop.op_private = 0; |
|
|
418 | |
|
|
419 | ENTER; |
|
|
420 | SAVETMPS; |
|
|
421 | |
|
|
422 | SAVEVPTR (PL_curcop); |
314 | PL_curcop = &cop; |
423 | PL_curcop = &cop; |
315 | |
424 | |
316 | SAVETMPS; |
|
|
317 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
425 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
|
|
426 | |
318 | FREETMPS; |
427 | FREETMPS; |
319 | |
428 | LEAVE; |
320 | PL_curcop = oldcop; |
|
|
321 | } |
429 | } |
322 | |
430 | |
323 | for (i = 0; i < count; ++i) |
431 | for (i = 0; i < count; ++i) |
324 | { |
432 | { |
325 | INDENT; |
433 | encode_indent (enc); |
326 | encode_he (enc, hes [i]); |
434 | encode_he (enc, hes [i]); |
327 | |
435 | |
328 | if (i < count - 1) |
436 | if (i < count - 1) |
329 | COMMA; |
437 | encode_comma (enc); |
330 | } |
|
|
331 | |
|
|
332 | NL; |
438 | } |
|
|
439 | |
|
|
440 | encode_nl (enc); |
333 | } |
441 | } |
334 | else |
442 | else |
335 | { |
443 | { |
336 | SV *sv; |
|
|
337 | HE *he = hv_iternext (hv); |
444 | HE *he = hv_iternext (hv); |
338 | |
445 | |
339 | for (;;) |
446 | for (;;) |
340 | { |
447 | { |
341 | INDENT; |
448 | encode_indent (enc); |
342 | encode_he (enc, he); |
449 | encode_he (enc, he); |
343 | |
450 | |
344 | if (!(he = hv_iternext (hv))) |
451 | if (!(he = hv_iternext (hv))) |
345 | break; |
452 | break; |
346 | |
453 | |
347 | COMMA; |
454 | encode_comma (enc); |
348 | } |
|
|
349 | |
|
|
350 | NL; |
455 | } |
|
|
456 | |
|
|
457 | encode_nl (enc); |
351 | } |
458 | } |
352 | } |
459 | } |
353 | |
460 | |
354 | --enc->indent; INDENT; encode_ch (enc, '}'); |
461 | --enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
|
|
462 | } |
|
|
463 | |
|
|
464 | // encode objects, arrays and special \0=false and \1=true values. |
|
|
465 | static void |
|
|
466 | encode_rv (enc_t *enc, SV *sv) |
|
|
467 | { |
|
|
468 | svtype svt; |
|
|
469 | |
|
|
470 | SvGETMAGIC (sv); |
|
|
471 | svt = SvTYPE (sv); |
|
|
472 | |
|
|
473 | if (expect_false (SvOBJECT (sv))) |
|
|
474 | { |
|
|
475 | if (SvSTASH (sv) == json_boolean_stash) |
|
|
476 | { |
|
|
477 | if (SvIV (sv)) |
|
|
478 | encode_str (enc, "true", 4, 0); |
|
|
479 | else |
|
|
480 | encode_str (enc, "false", 5, 0); |
|
|
481 | } |
|
|
482 | else |
|
|
483 | { |
|
|
484 | #if 0 |
|
|
485 | if (0 && sv_derived_from (rv, "JSON::Literal")) |
|
|
486 | { |
|
|
487 | // not yet |
|
|
488 | } |
|
|
489 | #endif |
|
|
490 | if (enc->json.flags & F_CONV_BLESSED) |
|
|
491 | { |
|
|
492 | // we re-bless the reference to get overload and other niceties right |
|
|
493 | GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1); |
|
|
494 | |
|
|
495 | if (to_json) |
|
|
496 | { |
|
|
497 | dSP; ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
498 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
|
|
499 | |
|
|
500 | // calling with G_SCALAR ensures that we always get a 1 reutrn value |
|
|
501 | // check anyways. |
|
|
502 | PUTBACK; |
|
|
503 | assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR)); |
|
|
504 | SPAGAIN; |
|
|
505 | |
|
|
506 | encode_sv (enc, POPs); |
|
|
507 | |
|
|
508 | FREETMPS; LEAVE; |
|
|
509 | } |
|
|
510 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
511 | encode_str (enc, "null", 4, 0); |
|
|
512 | else |
|
|
513 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it", |
|
|
514 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
515 | } |
|
|
516 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
517 | encode_str (enc, "null", 4, 0); |
|
|
518 | else |
|
|
519 | croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", |
|
|
520 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
521 | } |
|
|
522 | } |
|
|
523 | else if (svt == SVt_PVHV) |
|
|
524 | encode_hv (enc, (HV *)sv); |
|
|
525 | else if (svt == SVt_PVAV) |
|
|
526 | encode_av (enc, (AV *)sv); |
|
|
527 | else if (svt < SVt_PVAV) |
|
|
528 | { |
|
|
529 | STRLEN len = 0; |
|
|
530 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
531 | |
|
|
532 | if (len == 1 && *pv == '1') |
|
|
533 | encode_str (enc, "true", 4, 0); |
|
|
534 | else if (len == 1 && *pv == '0') |
|
|
535 | encode_str (enc, "false", 5, 0); |
|
|
536 | else |
|
|
537 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
538 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
539 | } |
|
|
540 | else |
|
|
541 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
542 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
355 | } |
543 | } |
356 | |
544 | |
357 | static void |
545 | static void |
358 | encode_sv (enc_t *enc, SV *sv) |
546 | encode_sv (enc_t *enc, SV *sv) |
359 | { |
547 | { |
… | |
… | |
367 | encode_str (enc, str, len, SvUTF8 (sv)); |
555 | encode_str (enc, str, len, SvUTF8 (sv)); |
368 | encode_ch (enc, '"'); |
556 | encode_ch (enc, '"'); |
369 | } |
557 | } |
370 | else if (SvNOKp (sv)) |
558 | else if (SvNOKp (sv)) |
371 | { |
559 | { |
|
|
560 | // trust that perl will do the right thing w.r.t. JSON syntax. |
372 | need (enc, NV_DIG + 32); |
561 | need (enc, NV_DIG + 32); |
373 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
562 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
374 | enc->cur += strlen (enc->cur); |
563 | enc->cur += strlen (enc->cur); |
375 | } |
564 | } |
376 | else if (SvIOKp (sv)) |
565 | else if (SvIOKp (sv)) |
377 | { |
566 | { |
378 | need (enc, 64); |
567 | // we assume we can always read an IV as a UV |
|
|
568 | if (SvUV (sv) & ~(UV)0x7fff) |
|
|
569 | { |
|
|
570 | // large integer, use the (rather slow) snprintf way. |
|
|
571 | need (enc, sizeof (UV) * 3); |
379 | enc->cur += |
572 | enc->cur += |
380 | SvIsUV(sv) |
573 | SvIsUV(sv) |
381 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
574 | ? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv)) |
382 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
575 | : snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv)); |
|
|
576 | } |
|
|
577 | else |
|
|
578 | { |
|
|
579 | // optimise the "small number case" |
|
|
580 | // code will likely be branchless and use only a single multiplication |
|
|
581 | I32 i = SvIV (sv); |
|
|
582 | U32 u; |
|
|
583 | char digit, nz = 0; |
|
|
584 | |
|
|
585 | need (enc, 6); |
|
|
586 | |
|
|
587 | *enc->cur = '-'; enc->cur += i < 0 ? 1 : 0; |
|
|
588 | u = i < 0 ? -i : i; |
|
|
589 | |
|
|
590 | // convert to 4.28 fixed-point representation |
|
|
591 | u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits |
|
|
592 | |
|
|
593 | // now output digit by digit, each time masking out the integer part |
|
|
594 | // and multiplying by 5 while moving the decimal point one to the right, |
|
|
595 | // resulting in a net multiplication by 10. |
|
|
596 | // we always write the digit to memory but conditionally increment |
|
|
597 | // the pointer, to ease the usage of conditional move instructions. |
|
|
598 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffff) * 5; |
|
|
599 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffff) * 5; |
|
|
600 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffff) * 5; |
|
|
601 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffff) * 5; |
|
|
602 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
|
|
603 | } |
383 | } |
604 | } |
384 | else if (SvROK (sv)) |
605 | else if (SvROK (sv)) |
385 | { |
606 | encode_rv (enc, SvRV (sv)); |
386 | if (!--enc->max_recurse) |
|
|
387 | croak ("data structure too deep (hit recursion limit)"); |
|
|
388 | |
|
|
389 | sv = SvRV (sv); |
|
|
390 | |
|
|
391 | switch (SvTYPE (sv)) |
|
|
392 | { |
|
|
393 | case SVt_PVAV: encode_av (enc, (AV *)sv); break; |
|
|
394 | case SVt_PVHV: encode_hv (enc, (HV *)sv); break; |
|
|
395 | |
|
|
396 | default: |
|
|
397 | croak ("JSON can only represent references to arrays or hashes"); |
|
|
398 | } |
|
|
399 | } |
|
|
400 | else if (!SvOK (sv)) |
607 | else if (!SvOK (sv)) |
401 | encode_str (enc, "null", 4, 0); |
608 | encode_str (enc, "null", 4, 0); |
402 | else |
609 | else |
403 | croak ("encountered perl type that JSON cannot handle"); |
610 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
|
|
611 | SvPV_nolen (sv), SvFLAGS (sv)); |
404 | } |
612 | } |
405 | |
613 | |
406 | static SV * |
614 | static SV * |
407 | encode_json (SV *scalar, UV flags) |
615 | encode_json (SV *scalar, JSON *json) |
408 | { |
616 | { |
409 | if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
|
|
410 | croak ("hash- or arraref required (not a simple scalar, use allow_nonref to allow this)"); |
|
|
411 | |
|
|
412 | enc_t enc; |
617 | enc_t enc; |
413 | enc.flags = flags; |
618 | |
|
|
619 | if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
|
|
620 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
|
|
621 | |
|
|
622 | enc.json = *json; |
414 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
623 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
415 | enc.cur = SvPVX (enc.sv); |
624 | enc.cur = SvPVX (enc.sv); |
416 | enc.end = SvEND (enc.sv); |
625 | enc.end = SvEND (enc.sv); |
417 | enc.max_recurse = 0; |
|
|
418 | enc.indent = 0; |
626 | enc.indent = 0; |
|
|
627 | enc.maxdepth = DEC_DEPTH (enc.json.flags); |
419 | |
628 | |
420 | SvPOK_only (enc.sv); |
629 | SvPOK_only (enc.sv); |
421 | encode_sv (&enc, scalar); |
630 | encode_sv (&enc, scalar); |
422 | |
631 | |
|
|
632 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
633 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
|
|
634 | |
423 | if (!(flags & (F_ASCII | F_UTF8))) |
635 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
424 | SvUTF8_on (enc.sv); |
636 | SvUTF8_on (enc.sv); |
425 | |
637 | |
426 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
638 | if (enc.json.flags & F_SHRINK) |
|
|
639 | shrink (enc.sv); |
|
|
640 | |
427 | return enc.sv; |
641 | return enc.sv; |
428 | } |
642 | } |
429 | |
643 | |
430 | ///////////////////////////////////////////////////////////////////////////// |
644 | ///////////////////////////////////////////////////////////////////////////// |
|
|
645 | // decoder |
431 | |
646 | |
432 | #define WS \ |
647 | // structure used for decoding JSON |
|
|
648 | typedef struct |
|
|
649 | { |
|
|
650 | char *cur; // current parser pointer |
|
|
651 | char *end; // end of input string |
|
|
652 | const char *err; // parse error, if != 0 |
|
|
653 | JSON json; |
|
|
654 | U32 depth; // recursion depth |
|
|
655 | U32 maxdepth; // recursion depth limit |
|
|
656 | } dec_t; |
|
|
657 | |
|
|
658 | inline void |
|
|
659 | decode_ws (dec_t *dec) |
|
|
660 | { |
433 | for (;;) \ |
661 | for (;;) |
434 | { \ |
662 | { |
435 | char ch = *dec->cur; \ |
663 | char ch = *dec->cur; |
|
|
664 | |
436 | if (ch > 0x20 \ |
665 | if (ch > 0x20 |
437 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ |
666 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
438 | break; \ |
667 | break; |
|
|
668 | |
439 | ++dec->cur; \ |
669 | ++dec->cur; |
440 | } |
670 | } |
|
|
671 | } |
441 | |
672 | |
442 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
673 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
|
|
674 | |
443 | #define EXPECT_CH(ch) SB \ |
675 | #define EXPECT_CH(ch) SB \ |
444 | if (*dec->cur != ch) \ |
676 | if (*dec->cur != ch) \ |
445 | ERR (# ch " expected"); \ |
677 | ERR (# ch " expected"); \ |
446 | ++dec->cur; \ |
678 | ++dec->cur; \ |
447 | SE |
679 | SE |
448 | |
680 | |
|
|
681 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
|
|
682 | #define DEC_DEC_DEPTH --dec->depth |
|
|
683 | |
449 | static SV *decode_sv (dec_t *dec); |
684 | static SV *decode_sv (dec_t *dec); |
450 | |
685 | |
451 | static signed char decode_hexdigit[256]; |
686 | static signed char decode_hexdigit[256]; |
452 | |
687 | |
453 | static UV |
688 | static UV |
454 | decode_4hex (dec_t *dec) |
689 | decode_4hex (dec_t *dec) |
455 | { |
690 | { |
456 | signed char d1, d2, d3, d4; |
691 | signed char d1, d2, d3, d4; |
|
|
692 | unsigned char *cur = (unsigned char *)dec->cur; |
457 | |
693 | |
458 | d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]]; |
694 | d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected"); |
459 | if (d1 < 0) ERR ("four hexadecimal digits expected"); |
695 | d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected"); |
460 | d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]]; |
696 | d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected"); |
461 | if (d2 < 0) ERR ("four hexadecimal digits expected"); |
697 | d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected"); |
462 | d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]]; |
|
|
463 | if (d3 < 0) ERR ("four hexadecimal digits expected"); |
|
|
464 | d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]]; |
|
|
465 | if (d4 < 0) ERR ("four hexadecimal digits expected"); |
|
|
466 | |
698 | |
467 | dec->cur += 4; |
699 | dec->cur += 4; |
468 | |
700 | |
469 | return ((UV)d1) << 12 |
701 | return ((UV)d1) << 12 |
470 | | ((UV)d2) << 8 |
702 | | ((UV)d2) << 8 |
… | |
… | |
473 | |
705 | |
474 | fail: |
706 | fail: |
475 | return (UV)-1; |
707 | return (UV)-1; |
476 | } |
708 | } |
477 | |
709 | |
478 | #define APPEND_GROW(n) SB \ |
|
|
479 | if (cur + (n) >= end) \ |
|
|
480 | { \ |
|
|
481 | STRLEN ofs = cur - SvPVX (sv); \ |
|
|
482 | SvGROW (sv, ofs + (n) + 1); \ |
|
|
483 | cur = SvPVX (sv) + ofs; \ |
|
|
484 | end = SvEND (sv); \ |
|
|
485 | } \ |
|
|
486 | SE |
|
|
487 | |
|
|
488 | #define APPEND_CH(ch) SB \ |
|
|
489 | APPEND_GROW (1); \ |
|
|
490 | *cur++ = (ch); \ |
|
|
491 | SE |
|
|
492 | |
|
|
493 | static SV * |
710 | static SV * |
494 | decode_str (dec_t *dec) |
711 | decode_str (dec_t *dec) |
495 | { |
712 | { |
496 | SV *sv = NEWSV (0,2); |
713 | SV *sv = 0; |
497 | int utf8 = 0; |
714 | int utf8 = 0; |
498 | char *cur = SvPVX (sv); |
715 | char *dec_cur = dec->cur; |
499 | char *end = SvEND (sv); |
|
|
500 | |
716 | |
501 | for (;;) |
717 | do |
502 | { |
718 | { |
503 | unsigned char ch = *(unsigned char *)dec->cur; |
719 | char buf [SHORT_STRING_LEN + UTF8_MAXBYTES]; |
|
|
720 | char *cur = buf; |
504 | |
721 | |
505 | if (ch == '"') |
722 | do |
506 | break; |
|
|
507 | else if (ch == '\\') |
|
|
508 | { |
723 | { |
509 | switch (*++dec->cur) |
724 | unsigned char ch = *(unsigned char *)dec_cur++; |
|
|
725 | |
|
|
726 | if (expect_false (ch == '"')) |
|
|
727 | { |
|
|
728 | --dec_cur; |
|
|
729 | break; |
510 | { |
730 | } |
511 | case '\\': |
731 | else if (expect_false (ch == '\\')) |
512 | case '/': |
732 | { |
513 | case '"': APPEND_CH (*dec->cur++); break; |
733 | switch (*dec_cur) |
514 | |
|
|
515 | case 'b': APPEND_CH ('\010'); ++dec->cur; break; |
|
|
516 | case 't': APPEND_CH ('\011'); ++dec->cur; break; |
|
|
517 | case 'n': APPEND_CH ('\012'); ++dec->cur; break; |
|
|
518 | case 'f': APPEND_CH ('\014'); ++dec->cur; break; |
|
|
519 | case 'r': APPEND_CH ('\015'); ++dec->cur; break; |
|
|
520 | |
|
|
521 | case 'u': |
|
|
522 | { |
734 | { |
523 | UV lo, hi; |
735 | case '\\': |
524 | ++dec->cur; |
736 | case '/': |
|
|
737 | case '"': *cur++ = *dec_cur++; break; |
525 | |
738 | |
526 | hi = decode_4hex (dec); |
739 | case 'b': ++dec_cur; *cur++ = '\010'; break; |
527 | if (hi == (UV)-1) |
740 | case 't': ++dec_cur; *cur++ = '\011'; break; |
528 | goto fail; |
741 | case 'n': ++dec_cur; *cur++ = '\012'; break; |
|
|
742 | case 'f': ++dec_cur; *cur++ = '\014'; break; |
|
|
743 | case 'r': ++dec_cur; *cur++ = '\015'; break; |
529 | |
744 | |
530 | // possibly a surrogate pair |
745 | case 'u': |
531 | if (hi >= 0xd800 && hi < 0xdc00) |
|
|
532 | { |
746 | { |
533 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
747 | UV lo, hi; |
534 | ERR ("illegal surrogate character"); |
748 | ++dec_cur; |
535 | |
749 | |
536 | dec->cur += 2; |
750 | dec->cur = dec_cur; |
537 | |
|
|
538 | lo = decode_4hex (dec); |
751 | hi = decode_4hex (dec); |
|
|
752 | dec_cur = dec->cur; |
539 | if (lo == (UV)-1) |
753 | if (hi == (UV)-1) |
540 | goto fail; |
754 | goto fail; |
541 | |
755 | |
|
|
756 | // possibly a surrogate pair |
|
|
757 | if (hi >= 0xd800) |
|
|
758 | if (hi < 0xdc00) |
|
|
759 | { |
|
|
760 | if (dec_cur [0] != '\\' || dec_cur [1] != 'u') |
|
|
761 | ERR ("missing low surrogate character in surrogate pair"); |
|
|
762 | |
|
|
763 | dec_cur += 2; |
|
|
764 | |
|
|
765 | dec->cur = dec_cur; |
|
|
766 | lo = decode_4hex (dec); |
|
|
767 | dec_cur = dec->cur; |
|
|
768 | if (lo == (UV)-1) |
|
|
769 | goto fail; |
|
|
770 | |
542 | if (lo < 0xdc00 || lo >= 0xe000) |
771 | if (lo < 0xdc00 || lo >= 0xe000) |
543 | ERR ("surrogate pair expected"); |
772 | ERR ("surrogate pair expected"); |
544 | |
773 | |
545 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
774 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
|
|
775 | } |
|
|
776 | else if (hi < 0xe000) |
|
|
777 | ERR ("missing high surrogate character in surrogate pair"); |
|
|
778 | |
|
|
779 | if (hi >= 0x80) |
|
|
780 | { |
|
|
781 | utf8 = 1; |
|
|
782 | |
|
|
783 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
|
|
784 | } |
|
|
785 | else |
|
|
786 | *cur++ = hi; |
546 | } |
787 | } |
547 | else if (lo >= 0xdc00 && lo < 0xe000) |
|
|
548 | ERR ("illegal surrogate character"); |
|
|
549 | |
|
|
550 | if (hi >= 0x80) |
|
|
551 | { |
788 | break; |
552 | utf8 = 1; |
|
|
553 | |
789 | |
554 | APPEND_GROW (4); // at most 4 bytes for 21 bits |
|
|
555 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
|
|
556 | } |
|
|
557 | else |
790 | default: |
558 | APPEND_CH (hi); |
791 | --dec_cur; |
|
|
792 | ERR ("illegal backslash escape sequence in string"); |
559 | } |
793 | } |
|
|
794 | } |
|
|
795 | else if (expect_true (ch >= 0x20 && ch <= 0x7f)) |
|
|
796 | *cur++ = ch; |
|
|
797 | else if (ch >= 0x80) |
|
|
798 | { |
|
|
799 | STRLEN clen; |
|
|
800 | UV uch; |
|
|
801 | |
|
|
802 | --dec_cur; |
|
|
803 | |
|
|
804 | uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
|
|
805 | if (clen == (STRLEN)-1) |
|
|
806 | ERR ("malformed UTF-8 character in JSON string"); |
|
|
807 | |
|
|
808 | do |
|
|
809 | *cur++ = *dec_cur++; |
|
|
810 | while (--clen); |
|
|
811 | |
|
|
812 | utf8 = 1; |
|
|
813 | } |
|
|
814 | else |
|
|
815 | { |
|
|
816 | --dec_cur; |
|
|
817 | |
|
|
818 | if (!ch) |
|
|
819 | ERR ("unexpected end of string while parsing JSON string"); |
560 | break; |
820 | else |
|
|
821 | ERR ("invalid character encountered while parsing JSON string"); |
561 | } |
822 | } |
562 | } |
823 | } |
563 | else if (ch >= 0x20 && ch <= 0x7f) |
824 | while (cur < buf + SHORT_STRING_LEN); |
564 | APPEND_CH (*dec->cur++); |
825 | |
565 | else if (ch >= 0x80) |
826 | { |
|
|
827 | STRLEN len = cur - buf; |
|
|
828 | |
|
|
829 | if (sv) |
566 | { |
830 | { |
567 | STRLEN clen; |
831 | SvGROW (sv, SvCUR (sv) + len + 1); |
568 | UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
832 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
569 | if (clen < 0) |
833 | SvCUR_set (sv, SvCUR (sv) + len); |
570 | ERR ("malformed UTF-8 character in string, cannot convert to JSON"); |
|
|
571 | |
|
|
572 | APPEND_GROW (clen); |
|
|
573 | memcpy (cur, dec->cur, clen); |
|
|
574 | cur += clen; |
|
|
575 | dec->cur += clen; |
|
|
576 | } |
834 | } |
577 | else |
835 | else |
578 | ERR ("invalid character encountered"); |
836 | sv = newSVpvn (buf, len); |
579 | } |
837 | } |
|
|
838 | } |
|
|
839 | while (*dec_cur != '"'); |
580 | |
840 | |
581 | ++dec->cur; |
841 | ++dec_cur; |
582 | |
842 | |
583 | SvCUR_set (sv, cur - SvPVX (sv)); |
843 | if (sv) |
584 | |
844 | { |
585 | SvPOK_only (sv); |
845 | SvPOK_only (sv); |
586 | *SvEND (sv) = 0; |
846 | *SvEND (sv) = 0; |
587 | |
847 | |
588 | if (utf8) |
848 | if (utf8) |
589 | SvUTF8_on (sv); |
849 | SvUTF8_on (sv); |
|
|
850 | } |
|
|
851 | else |
|
|
852 | sv = newSVpvn ("", 0); |
590 | |
853 | |
|
|
854 | dec->cur = dec_cur; |
591 | return sv; |
855 | return sv; |
592 | |
856 | |
593 | fail: |
857 | fail: |
594 | SvREFCNT_dec (sv); |
858 | dec->cur = dec_cur; |
595 | return 0; |
859 | return 0; |
596 | } |
860 | } |
597 | |
861 | |
598 | static SV * |
862 | static SV * |
599 | decode_num (dec_t *dec) |
863 | decode_num (dec_t *dec) |
… | |
… | |
609 | { |
873 | { |
610 | ++dec->cur; |
874 | ++dec->cur; |
611 | if (*dec->cur >= '0' && *dec->cur <= '9') |
875 | if (*dec->cur >= '0' && *dec->cur <= '9') |
612 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
876 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
613 | } |
877 | } |
614 | |
878 | else if (*dec->cur < '0' || *dec->cur > '9') |
615 | // int |
879 | ERR ("malformed number (no digits after initial minus)"); |
|
|
880 | else |
|
|
881 | do |
|
|
882 | { |
|
|
883 | ++dec->cur; |
|
|
884 | } |
616 | while (*dec->cur >= '0' && *dec->cur <= '9') |
885 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
617 | ++dec->cur; |
|
|
618 | |
886 | |
619 | // [frac] |
887 | // [frac] |
620 | if (*dec->cur == '.') |
888 | if (*dec->cur == '.') |
621 | { |
889 | { |
622 | is_nv = 1; |
890 | ++dec->cur; |
|
|
891 | |
|
|
892 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
893 | ERR ("malformed number (no digits after decimal point)"); |
623 | |
894 | |
624 | do |
895 | do |
625 | { |
896 | { |
626 | ++dec->cur; |
897 | ++dec->cur; |
627 | } |
898 | } |
628 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
899 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
|
|
900 | |
|
|
901 | is_nv = 1; |
629 | } |
902 | } |
630 | |
903 | |
631 | // [exp] |
904 | // [exp] |
632 | if (*dec->cur == 'e' || *dec->cur == 'E') |
905 | if (*dec->cur == 'e' || *dec->cur == 'E') |
633 | { |
906 | { |
634 | is_nv = 1; |
|
|
635 | |
|
|
636 | ++dec->cur; |
907 | ++dec->cur; |
|
|
908 | |
637 | if (*dec->cur == '-' || *dec->cur == '+') |
909 | if (*dec->cur == '-' || *dec->cur == '+') |
638 | ++dec->cur; |
910 | ++dec->cur; |
639 | |
911 | |
|
|
912 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
913 | ERR ("malformed number (no digits after exp sign)"); |
|
|
914 | |
|
|
915 | do |
|
|
916 | { |
|
|
917 | ++dec->cur; |
|
|
918 | } |
640 | while (*dec->cur >= '0' && *dec->cur <= '9') |
919 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
641 | ++dec->cur; |
920 | |
|
|
921 | is_nv = 1; |
642 | } |
922 | } |
643 | |
923 | |
644 | if (!is_nv) |
924 | if (!is_nv) |
645 | { |
925 | { |
646 | UV uv; |
926 | // special case the rather common 1..4-digit-int case, assumes 32 bit ints or so |
647 | int numtype = grok_number (start, dec->cur - start, &uv); |
927 | if (*start == '-') |
648 | if (numtype & IS_NUMBER_IN_UV) |
928 | switch (dec->cur - start) |
649 | if (numtype & IS_NUMBER_NEG) |
|
|
650 | { |
929 | { |
651 | if (uv < (UV)IV_MIN) |
930 | case 2: return newSViv (-( start [1] - '0' * 1)); |
652 | return newSViv (-(IV)uv); |
931 | case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11)); |
|
|
932 | case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
|
|
933 | case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
653 | } |
934 | } |
|
|
935 | else |
|
|
936 | switch (dec->cur - start) |
|
|
937 | { |
|
|
938 | case 1: return newSViv ( start [0] - '0' * 1); |
|
|
939 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
|
|
940 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
|
|
941 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
942 | } |
|
|
943 | |
|
|
944 | { |
|
|
945 | UV uv; |
|
|
946 | int numtype = grok_number (start, dec->cur - start, &uv); |
|
|
947 | if (numtype & IS_NUMBER_IN_UV) |
|
|
948 | if (numtype & IS_NUMBER_NEG) |
|
|
949 | { |
|
|
950 | if (uv < (UV)IV_MIN) |
|
|
951 | return newSViv (-(IV)uv); |
|
|
952 | } |
654 | else |
953 | else |
655 | return newSVuv (uv); |
954 | return newSVuv (uv); |
|
|
955 | |
|
|
956 | // here would likely be the place for bigint support |
656 | } |
957 | } |
|
|
958 | } |
657 | |
959 | |
|
|
960 | // if we ever support bigint or bigfloat, this is the place for bigfloat |
658 | return newSVnv (Atof (start)); |
961 | return newSVnv (Atof (start)); |
659 | |
962 | |
660 | fail: |
963 | fail: |
661 | return 0; |
964 | return 0; |
662 | } |
965 | } |
… | |
… | |
664 | static SV * |
967 | static SV * |
665 | decode_av (dec_t *dec) |
968 | decode_av (dec_t *dec) |
666 | { |
969 | { |
667 | AV *av = newAV (); |
970 | AV *av = newAV (); |
668 | |
971 | |
|
|
972 | DEC_INC_DEPTH; |
|
|
973 | decode_ws (dec); |
|
|
974 | |
|
|
975 | if (*dec->cur == ']') |
|
|
976 | ++dec->cur; |
|
|
977 | else |
669 | for (;;) |
978 | for (;;) |
670 | { |
979 | { |
671 | SV *value; |
980 | SV *value; |
672 | |
981 | |
673 | value = decode_sv (dec); |
982 | value = decode_sv (dec); |
674 | if (!value) |
983 | if (!value) |
675 | goto fail; |
984 | goto fail; |
676 | |
985 | |
677 | av_push (av, value); |
986 | av_push (av, value); |
678 | |
987 | |
679 | WS; |
988 | decode_ws (dec); |
680 | |
989 | |
681 | if (*dec->cur == ']') |
990 | if (*dec->cur == ']') |
682 | { |
991 | { |
683 | ++dec->cur; |
992 | ++dec->cur; |
684 | break; |
993 | break; |
|
|
994 | } |
685 | } |
995 | |
686 | |
|
|
687 | if (*dec->cur != ',') |
996 | if (*dec->cur != ',') |
688 | ERR (", or ] expected while parsing array"); |
997 | ERR (", or ] expected while parsing array"); |
689 | |
998 | |
690 | ++dec->cur; |
999 | ++dec->cur; |
691 | } |
1000 | } |
692 | |
1001 | |
|
|
1002 | DEC_DEC_DEPTH; |
693 | return newRV_noinc ((SV *)av); |
1003 | return newRV_noinc ((SV *)av); |
694 | |
1004 | |
695 | fail: |
1005 | fail: |
696 | SvREFCNT_dec (av); |
1006 | SvREFCNT_dec (av); |
|
|
1007 | DEC_DEC_DEPTH; |
697 | return 0; |
1008 | return 0; |
698 | } |
1009 | } |
699 | |
1010 | |
700 | static SV * |
1011 | static SV * |
701 | decode_hv (dec_t *dec) |
1012 | decode_hv (dec_t *dec) |
702 | { |
1013 | { |
|
|
1014 | SV *sv; |
703 | HV *hv = newHV (); |
1015 | HV *hv = newHV (); |
704 | |
1016 | |
|
|
1017 | DEC_INC_DEPTH; |
|
|
1018 | decode_ws (dec); |
|
|
1019 | |
|
|
1020 | if (*dec->cur == '}') |
|
|
1021 | ++dec->cur; |
|
|
1022 | else |
705 | for (;;) |
1023 | for (;;) |
706 | { |
1024 | { |
707 | SV *key, *value; |
1025 | decode_ws (dec); EXPECT_CH ('"'); |
708 | |
1026 | |
709 | WS; EXPECT_CH ('"'); |
1027 | // heuristic: assume that |
710 | |
1028 | // a) decode_str + hv_store_ent are abysmally slow. |
711 | key = decode_str (dec); |
1029 | // b) most hash keys are short, simple ascii text. |
712 | if (!key) |
1030 | // => try to "fast-match" such strings to avoid |
713 | goto fail; |
1031 | // the overhead of decode_str + hv_store_ent. |
714 | |
|
|
715 | WS; EXPECT_CH (':'); |
|
|
716 | |
|
|
717 | value = decode_sv (dec); |
|
|
718 | if (!value) |
|
|
719 | { |
1032 | { |
|
|
1033 | SV *value; |
|
|
1034 | char *p = dec->cur; |
|
|
1035 | char *e = p + 24; // only try up to 24 bytes |
|
|
1036 | |
|
|
1037 | for (;;) |
|
|
1038 | { |
|
|
1039 | // the >= 0x80 is true on most architectures |
|
|
1040 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
|
|
1041 | { |
|
|
1042 | // slow path, back up and use decode_str |
|
|
1043 | SV *key = decode_str (dec); |
|
|
1044 | if (!key) |
|
|
1045 | goto fail; |
|
|
1046 | |
|
|
1047 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1048 | |
|
|
1049 | value = decode_sv (dec); |
|
|
1050 | if (!value) |
|
|
1051 | { |
|
|
1052 | SvREFCNT_dec (key); |
|
|
1053 | goto fail; |
|
|
1054 | } |
|
|
1055 | |
|
|
1056 | hv_store_ent (hv, key, value, 0); |
720 | SvREFCNT_dec (key); |
1057 | SvREFCNT_dec (key); |
|
|
1058 | |
|
|
1059 | break; |
|
|
1060 | } |
|
|
1061 | else if (*p == '"') |
|
|
1062 | { |
|
|
1063 | // fast path, got a simple key |
|
|
1064 | char *key = dec->cur; |
|
|
1065 | int len = p - key; |
|
|
1066 | dec->cur = p + 1; |
|
|
1067 | |
|
|
1068 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1069 | |
|
|
1070 | value = decode_sv (dec); |
|
|
1071 | if (!value) |
721 | goto fail; |
1072 | goto fail; |
|
|
1073 | |
|
|
1074 | hv_store (hv, key, len, value, 0); |
|
|
1075 | |
|
|
1076 | break; |
|
|
1077 | } |
|
|
1078 | |
|
|
1079 | ++p; |
|
|
1080 | } |
722 | } |
1081 | } |
723 | |
1082 | |
724 | //TODO: optimise |
1083 | decode_ws (dec); |
725 | hv_store_ent (hv, key, value, 0); |
|
|
726 | |
1084 | |
727 | WS; |
|
|
728 | |
|
|
729 | if (*dec->cur == '}') |
1085 | if (*dec->cur == '}') |
|
|
1086 | { |
|
|
1087 | ++dec->cur; |
|
|
1088 | break; |
|
|
1089 | } |
|
|
1090 | |
|
|
1091 | if (*dec->cur != ',') |
|
|
1092 | ERR (", or } expected while parsing object/hash"); |
|
|
1093 | |
|
|
1094 | ++dec->cur; |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | DEC_DEC_DEPTH; |
|
|
1098 | sv = newRV_noinc ((SV *)hv); |
|
|
1099 | |
|
|
1100 | // check filter callbacks |
|
|
1101 | if (dec->json.flags & F_HOOK) |
|
|
1102 | { |
|
|
1103 | ENTER; SAVETMPS; |
|
|
1104 | |
|
|
1105 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
730 | { |
1106 | { |
731 | ++dec->cur; |
1107 | int count; |
732 | break; |
1108 | |
|
|
1109 | dSP; PUSHMARK (SP); |
|
|
1110 | XPUSHs (sv_2mortal (sv)); |
|
|
1111 | |
|
|
1112 | PUTBACK; count = call_sv (dec->json.cb_sk_object, G_ARRAY); SPAGAIN; |
|
|
1113 | |
|
|
1114 | if (count == 1) |
|
|
1115 | { |
|
|
1116 | sv = newSVsv (POPs); |
|
|
1117 | goto filter_ok; |
|
|
1118 | } |
|
|
1119 | |
|
|
1120 | SvREFCNT_inc (sv); |
733 | } |
1121 | } |
734 | |
1122 | |
735 | if (*dec->cur != ',') |
1123 | if (dec->json.cb_object) |
736 | ERR (", or } expected while parsing object/hash"); |
1124 | { |
|
|
1125 | int count; |
737 | |
1126 | |
738 | ++dec->cur; |
1127 | dSP; ENTER; SAVETMPS; PUSHMARK (SP); |
739 | } |
1128 | XPUSHs (sv_2mortal (sv)); |
740 | |
1129 | |
741 | return newRV_noinc ((SV *)hv); |
1130 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
|
|
1131 | |
|
|
1132 | if (count == 1) |
|
|
1133 | { |
|
|
1134 | sv = newSVsv (POPs); |
|
|
1135 | goto filter_ok; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | SvREFCNT_inc (sv); |
|
|
1139 | } |
|
|
1140 | |
|
|
1141 | filter_ok: |
|
|
1142 | FREETMPS; LEAVE; |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | return sv; |
742 | |
1146 | |
743 | fail: |
1147 | fail: |
744 | SvREFCNT_dec (hv); |
1148 | SvREFCNT_dec (hv); |
|
|
1149 | DEC_DEC_DEPTH; |
745 | return 0; |
1150 | return 0; |
746 | } |
1151 | } |
747 | |
1152 | |
748 | static SV * |
1153 | static SV * |
749 | decode_sv (dec_t *dec) |
1154 | decode_sv (dec_t *dec) |
750 | { |
1155 | { |
751 | WS; |
1156 | decode_ws (dec); |
|
|
1157 | |
|
|
1158 | // the beauty of JSON: you need exactly one character lookahead |
|
|
1159 | // to parse anything. |
752 | switch (*dec->cur) |
1160 | switch (*dec->cur) |
753 | { |
1161 | { |
754 | case '"': ++dec->cur; return decode_str (dec); |
1162 | case '"': ++dec->cur; return decode_str (dec); |
755 | case '[': ++dec->cur; return decode_av (dec); |
1163 | case '[': ++dec->cur; return decode_av (dec); |
756 | case '{': ++dec->cur; return decode_hv (dec); |
1164 | case '{': ++dec->cur; return decode_hv (dec); |
… | |
… | |
762 | |
1170 | |
763 | case 't': |
1171 | case 't': |
764 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1172 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
765 | { |
1173 | { |
766 | dec->cur += 4; |
1174 | dec->cur += 4; |
767 | return newSViv (1); |
1175 | return SvREFCNT_inc (json_true); |
768 | } |
1176 | } |
769 | else |
1177 | else |
770 | ERR ("'true' expected"); |
1178 | ERR ("'true' expected"); |
771 | |
1179 | |
772 | break; |
1180 | break; |
773 | |
1181 | |
774 | case 'f': |
1182 | case 'f': |
775 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1183 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
776 | { |
1184 | { |
777 | dec->cur += 5; |
1185 | dec->cur += 5; |
778 | return newSViv (0); |
1186 | return SvREFCNT_inc (json_false); |
779 | } |
1187 | } |
780 | else |
1188 | else |
781 | ERR ("'false' expected"); |
1189 | ERR ("'false' expected"); |
782 | |
1190 | |
783 | break; |
1191 | break; |
784 | |
1192 | |
785 | case 'n': |
1193 | case 'n': |
786 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
1194 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
787 | { |
1195 | { |
788 | dec->cur += 4; |
1196 | dec->cur += 4; |
789 | return newSViv (1); |
1197 | return newSVsv (&PL_sv_undef); |
790 | } |
1198 | } |
791 | else |
1199 | else |
792 | ERR ("'null' expected"); |
1200 | ERR ("'null' expected"); |
793 | |
1201 | |
794 | break; |
1202 | break; |
795 | |
1203 | |
796 | default: |
1204 | default: |
797 | ERR ("malformed json string"); |
1205 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
798 | break; |
1206 | break; |
799 | } |
1207 | } |
800 | |
1208 | |
801 | fail: |
1209 | fail: |
802 | return 0; |
1210 | return 0; |
803 | } |
1211 | } |
804 | |
1212 | |
805 | static SV * |
1213 | static SV * |
806 | decode_json (SV *string, UV flags) |
1214 | decode_json (SV *string, JSON *json, UV *offset_return) |
807 | { |
1215 | { |
|
|
1216 | dec_t dec; |
|
|
1217 | UV offset; |
808 | SV *sv; |
1218 | SV *sv; |
809 | |
1219 | |
|
|
1220 | SvGETMAGIC (string); |
|
|
1221 | SvUPGRADE (string, SVt_PV); |
|
|
1222 | |
|
|
1223 | if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags)) |
|
|
1224 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
1225 | (unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags)); |
|
|
1226 | |
810 | if (!(flags & F_UTF8)) |
1227 | if (json->flags & F_UTF8) |
|
|
1228 | sv_utf8_downgrade (string, 0); |
|
|
1229 | else |
811 | sv_utf8_upgrade (string); |
1230 | sv_utf8_upgrade (string); |
812 | |
1231 | |
813 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1232 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
814 | |
1233 | |
815 | dec_t dec; |
1234 | dec.json = *json; |
816 | dec.flags = flags; |
|
|
817 | dec.cur = SvPVX (string); |
1235 | dec.cur = SvPVX (string); |
818 | dec.end = SvEND (string); |
1236 | dec.end = SvEND (string); |
819 | dec.err = 0; |
1237 | dec.err = 0; |
|
|
1238 | dec.depth = 0; |
|
|
1239 | dec.maxdepth = DEC_DEPTH (dec.json.flags); |
820 | |
1240 | |
821 | *dec.end = 1; // invalid anywhere |
1241 | if (dec.json.cb_object || dec.json.cb_sk_object) |
|
|
1242 | dec.json.flags |= F_HOOK; |
|
|
1243 | |
|
|
1244 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
822 | sv = decode_sv (&dec); |
1245 | sv = decode_sv (&dec); |
823 | *dec.end = 0; |
1246 | |
|
|
1247 | if (!(offset_return || !sv)) |
|
|
1248 | { |
|
|
1249 | // check for trailing garbage |
|
|
1250 | decode_ws (&dec); |
|
|
1251 | |
|
|
1252 | if (*dec.cur) |
|
|
1253 | { |
|
|
1254 | dec.err = "garbage after JSON object"; |
|
|
1255 | SvREFCNT_dec (sv); |
|
|
1256 | sv = 0; |
|
|
1257 | } |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | if (offset_return || !sv) |
|
|
1261 | { |
|
|
1262 | offset = dec.json.flags & F_UTF8 |
|
|
1263 | ? dec.cur - SvPVX (string) |
|
|
1264 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
1265 | |
|
|
1266 | if (offset_return) |
|
|
1267 | *offset_return = offset; |
|
|
1268 | } |
824 | |
1269 | |
825 | if (!sv) |
1270 | if (!sv) |
826 | { |
1271 | { |
827 | IV offset = utf8_distance (dec.cur, SvPVX (string)); |
|
|
828 | SV *uni = sv_newmortal (); |
1272 | SV *uni = sv_newmortal (); |
829 | |
1273 | |
|
|
1274 | // horrible hack to silence warning inside pv_uni_display |
|
|
1275 | COP cop = *PL_curcop; |
|
|
1276 | cop.cop_warnings = pWARN_NONE; |
|
|
1277 | ENTER; |
|
|
1278 | SAVEVPTR (PL_curcop); |
|
|
1279 | PL_curcop = &cop; |
830 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1280 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
|
|
1281 | LEAVE; |
|
|
1282 | |
831 | croak ("%s, at character %d (%s)", |
1283 | croak ("%s, at character offset %d [\"%s\"]", |
832 | dec.err, |
1284 | dec.err, |
833 | (int)offset, |
1285 | (int)offset, |
834 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1286 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
835 | } |
1287 | } |
836 | |
1288 | |
837 | sv = sv_2mortal (sv); |
1289 | sv = sv_2mortal (sv); |
838 | |
1290 | |
839 | if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1291 | if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
840 | croak ("JSON object or array expected (but number, string, true, false or null found, use allow_nonref to allow this)"); |
1292 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
841 | |
1293 | |
842 | return sv; |
1294 | return sv; |
843 | } |
1295 | } |
844 | |
1296 | |
|
|
1297 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1298 | // XS interface functions |
|
|
1299 | |
845 | MODULE = JSON::XS PACKAGE = JSON::XS |
1300 | MODULE = JSON::XS PACKAGE = JSON::XS |
846 | |
1301 | |
847 | BOOT: |
1302 | BOOT: |
848 | { |
1303 | { |
849 | int i; |
1304 | int i; |
850 | |
1305 | |
851 | memset (decode_hexdigit, 0xff, 256); |
|
|
852 | for (i = 10; i--; ) |
1306 | for (i = 0; i < 256; ++i) |
853 | decode_hexdigit ['0' + i] = i; |
1307 | decode_hexdigit [i] = |
|
|
1308 | i >= '0' && i <= '9' ? i - '0' |
|
|
1309 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
|
|
1310 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
|
|
1311 | : -1; |
854 | |
1312 | |
855 | for (i = 7; i--; ) |
1313 | json_stash = gv_stashpv ("JSON::XS" , 1); |
|
|
1314 | json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); |
|
|
1315 | |
|
|
1316 | json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true ); |
|
|
1317 | json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false); |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | PROTOTYPES: DISABLE |
|
|
1321 | |
|
|
1322 | void new (char *klass) |
|
|
1323 | PPCODE: |
|
|
1324 | { |
|
|
1325 | SV *pv = NEWSV (0, sizeof (JSON)); |
|
|
1326 | SvPOK_only (pv); |
|
|
1327 | Zero (SvPVX (pv), 1, JSON); |
|
|
1328 | ((JSON *)SvPVX (pv))->flags = F_DEFAULT; |
|
|
1329 | XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), json_stash))); |
|
|
1330 | } |
|
|
1331 | |
|
|
1332 | void ascii (JSON *self, int enable = 1) |
|
|
1333 | ALIAS: |
|
|
1334 | ascii = F_ASCII |
|
|
1335 | latin1 = F_LATIN1 |
|
|
1336 | utf8 = F_UTF8 |
|
|
1337 | indent = F_INDENT |
|
|
1338 | canonical = F_CANONICAL |
|
|
1339 | space_before = F_SPACE_BEFORE |
|
|
1340 | space_after = F_SPACE_AFTER |
|
|
1341 | pretty = F_PRETTY |
|
|
1342 | allow_nonref = F_ALLOW_NONREF |
|
|
1343 | shrink = F_SHRINK |
|
|
1344 | allow_blessed = F_ALLOW_BLESSED |
|
|
1345 | convert_blessed = F_CONV_BLESSED |
|
|
1346 | PPCODE: |
|
|
1347 | { |
|
|
1348 | if (enable) |
|
|
1349 | self->flags |= ix; |
|
|
1350 | else |
|
|
1351 | self->flags &= ~ix; |
|
|
1352 | |
|
|
1353 | XPUSHs (ST (0)); |
|
|
1354 | } |
|
|
1355 | |
|
|
1356 | void max_depth (JSON *self, UV max_depth = 0x80000000UL) |
|
|
1357 | PPCODE: |
|
|
1358 | { |
|
|
1359 | UV log2 = 0; |
|
|
1360 | |
|
|
1361 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
|
|
1362 | |
|
|
1363 | while ((1UL << log2) < max_depth) |
|
|
1364 | ++log2; |
|
|
1365 | |
|
|
1366 | self->flags = self->flags & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1367 | |
|
|
1368 | XPUSHs (ST (0)); |
|
|
1369 | } |
|
|
1370 | |
|
|
1371 | void max_size (JSON *self, UV max_size = 0) |
|
|
1372 | PPCODE: |
|
|
1373 | { |
|
|
1374 | UV log2 = 0; |
|
|
1375 | |
|
|
1376 | if (max_size > 0x80000000UL) max_size = 0x80000000UL; |
|
|
1377 | if (max_size == 1) max_size = 2; |
|
|
1378 | |
|
|
1379 | while ((1UL << log2) < max_size) |
|
|
1380 | ++log2; |
|
|
1381 | |
|
|
1382 | self->flags = self->flags & ~F_MAXSIZE | (log2 << S_MAXSIZE); |
|
|
1383 | |
|
|
1384 | XPUSHs (ST (0)); |
|
|
1385 | } |
|
|
1386 | |
|
|
1387 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
|
|
1388 | ALIAS: |
|
|
1389 | filter_json_single_key_object = 1 |
|
|
1390 | PPCODE: |
|
|
1391 | { |
|
|
1392 | SV **svp; |
|
|
1393 | |
|
|
1394 | if (!SvOK (cb)) |
|
|
1395 | cb = 0; |
|
|
1396 | else |
|
|
1397 | cb = newSVsv (cb); |
|
|
1398 | |
|
|
1399 | switch (ix) |
856 | { |
1400 | { |
857 | decode_hexdigit ['a' + i] = 10 + i; |
1401 | case 0: svp = &self->cb_object ; break; |
858 | decode_hexdigit ['A' + i] = 10 + i; |
1402 | case 1: svp = &self->cb_sk_object; break; |
859 | } |
1403 | } |
860 | |
1404 | |
861 | json_stash = gv_stashpv ("JSON::XS", 1); |
1405 | if (*svp) |
862 | } |
1406 | SvREFCNT_dec (*svp); |
863 | |
1407 | |
864 | PROTOTYPES: DISABLE |
1408 | *svp = cb; |
865 | |
1409 | |
866 | SV *new (char *dummy) |
1410 | XPUSHs (ST (0)); |
867 | CODE: |
|
|
868 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
|
|
869 | OUTPUT: |
|
|
870 | RETVAL |
|
|
871 | |
|
|
872 | SV *ascii (SV *self, int enable) |
|
|
873 | ALIAS: |
|
|
874 | ascii = F_ASCII |
|
|
875 | utf8 = F_UTF8 |
|
|
876 | indent = F_INDENT |
|
|
877 | canonical = F_CANONICAL |
|
|
878 | space_before = F_SPACE_BEFORE |
|
|
879 | space_after = F_SPACE_AFTER |
|
|
880 | json_rpc = F_JSON_RPC |
|
|
881 | pretty = F_PRETTY |
|
|
882 | allow_nonref = F_ALLOW_NONREF |
|
|
883 | CODE: |
|
|
884 | { |
|
|
885 | UV *uv = SvJSON (self); |
|
|
886 | if (enable) |
|
|
887 | *uv |= ix; |
|
|
888 | else |
|
|
889 | *uv &= ~ix; |
|
|
890 | |
|
|
891 | RETVAL = newSVsv (self); |
|
|
892 | } |
1411 | } |
893 | OUTPUT: |
|
|
894 | RETVAL |
|
|
895 | |
1412 | |
896 | void encode (SV *self, SV *scalar) |
1413 | void encode (JSON *self, SV *scalar) |
897 | PPCODE: |
1414 | PPCODE: |
898 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
1415 | XPUSHs (encode_json (scalar, self)); |
899 | |
1416 | |
900 | void decode (SV *self, SV *jsonstr) |
1417 | void decode (JSON *self, SV *jsonstr) |
901 | PPCODE: |
1418 | PPCODE: |
902 | XPUSHs (decode_json (jsonstr, *SvJSON (self))); |
1419 | XPUSHs (decode_json (jsonstr, self, 0)); |
|
|
1420 | |
|
|
1421 | void decode_prefix (JSON *self, SV *jsonstr) |
|
|
1422 | PPCODE: |
|
|
1423 | { |
|
|
1424 | UV offset; |
|
|
1425 | EXTEND (SP, 2); |
|
|
1426 | PUSHs (decode_json (jsonstr, self, &offset)); |
|
|
1427 | PUSHs (sv_2mortal (newSVuv (offset))); |
|
|
1428 | } |
903 | |
1429 | |
904 | PROTOTYPES: ENABLE |
1430 | PROTOTYPES: ENABLE |
905 | |
1431 | |
906 | void to_json (SV *scalar) |
1432 | void to_json (SV *scalar) |
907 | PPCODE: |
1433 | PPCODE: |
|
|
1434 | { |
|
|
1435 | JSON json = { F_DEFAULT | F_UTF8 }; |
908 | XPUSHs (encode_json (scalar, F_UTF8)); |
1436 | XPUSHs (encode_json (scalar, &json)); |
|
|
1437 | } |
909 | |
1438 | |
910 | void from_json (SV *jsonstr) |
1439 | void from_json (SV *jsonstr) |
911 | PPCODE: |
1440 | PPCODE: |
|
|
1441 | { |
|
|
1442 | JSON json = { F_DEFAULT | F_UTF8 }; |
912 | XPUSHs (decode_json (jsonstr, F_UTF8)); |
1443 | XPUSHs (decode_json (jsonstr, &json, 0)); |
|
|
1444 | } |
913 | |
1445 | |