1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
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 | #include <stdio.h> |
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9 | #include <limits.h> |
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10 | #include <float.h> |
9 | |
11 | |
10 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
12 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
11 | # define snprintf _snprintf // C compilers have this in stdio.h |
13 | # define snprintf _snprintf // C compilers have this in stdio.h |
12 | #endif |
14 | #endif |
13 | |
15 | |
14 | // some old perls do not have this, try to make it work, no |
16 | // 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. |
17 | // guarantees, though. if it breaks, you get to keep the pieces. |
16 | #ifndef UTF8_MAXBYTES |
18 | #ifndef UTF8_MAXBYTES |
17 | # define UTF8_MAXBYTES 13 |
19 | # define UTF8_MAXBYTES 13 |
18 | #endif |
20 | #endif |
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21 | |
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22 | #define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2) |
19 | |
23 | |
20 | #define F_ASCII 0x00000001UL |
24 | #define F_ASCII 0x00000001UL |
21 | #define F_LATIN1 0x00000002UL |
25 | #define F_LATIN1 0x00000002UL |
22 | #define F_UTF8 0x00000004UL |
26 | #define F_UTF8 0x00000004UL |
23 | #define F_INDENT 0x00000008UL |
27 | #define F_INDENT 0x00000008UL |
… | |
… | |
25 | #define F_SPACE_BEFORE 0x00000020UL |
29 | #define F_SPACE_BEFORE 0x00000020UL |
26 | #define F_SPACE_AFTER 0x00000040UL |
30 | #define F_SPACE_AFTER 0x00000040UL |
27 | #define F_ALLOW_NONREF 0x00000100UL |
31 | #define F_ALLOW_NONREF 0x00000100UL |
28 | #define F_SHRINK 0x00000200UL |
32 | #define F_SHRINK 0x00000200UL |
29 | #define F_ALLOW_BLESSED 0x00000400UL |
33 | #define F_ALLOW_BLESSED 0x00000400UL |
30 | #define F_CONV_BLESSED 0x00000800UL // NYI |
34 | #define F_CONV_BLESSED 0x00000800UL |
31 | #define F_MAXDEPTH 0xf8000000UL |
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32 | #define S_MAXDEPTH 27 |
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33 | #define F_MAXSIZE 0x01f00000UL |
35 | #define F_RELAXED 0x00001000UL |
34 | #define S_MAXSIZE 20 |
36 | #define F_ALLOW_UNKNOWN 0x00002000UL |
35 | |
37 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
36 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
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37 | #define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE )) |
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38 | |
38 | |
39 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
39 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
40 | #define F_DEFAULT (9UL << S_MAXDEPTH) |
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41 | |
40 | |
42 | #define INIT_SIZE 32 // initial scalar size to be allocated |
41 | #define INIT_SIZE 32 // initial scalar size to be allocated |
43 | #define INDENT_STEP 3 // spaces per indentation level |
42 | #define INDENT_STEP 3 // spaces per indentation level |
44 | |
43 | |
45 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
44 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
46 | |
45 | |
47 | #define SB do { |
46 | #define SB do { |
48 | #define SE } while (0) |
47 | #define SE } while (0) |
49 | |
48 | |
50 | #if __GNUC__ >= 3 |
49 | #if __GNUC__ >= 3 |
51 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
50 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
52 | # define inline inline |
51 | # define INLINE static inline |
53 | #else |
52 | #else |
54 | # define expect(expr,value) (expr) |
53 | # define expect(expr,value) (expr) |
55 | # define inline static |
54 | # define INLINE static |
56 | #endif |
55 | #endif |
57 | |
56 | |
58 | #define expect_false(expr) expect ((expr) != 0, 0) |
57 | #define expect_false(expr) expect ((expr) != 0, 0) |
59 | #define expect_true(expr) expect ((expr) != 0, 1) |
58 | #define expect_true(expr) expect ((expr) != 0, 1) |
60 | |
59 | |
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60 | #define IN_RANGE_INC(type,val,beg,end) \ |
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61 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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62 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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63 | |
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64 | #define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
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65 | |
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66 | #ifdef USE_ITHREADS |
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67 | # define JSON_SLOW 1 |
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68 | # define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) |
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69 | #else |
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70 | # define JSON_SLOW 0 |
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71 | # define JSON_STASH json_stash |
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72 | #endif |
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73 | |
61 | static HV *json_stash, *json_boolean_stash; // JSON::XS:: |
74 | static HV *json_stash, *json_boolean_stash; // JSON::XS:: |
62 | static SV *json_true, *json_false; |
75 | static SV *json_true, *json_false; |
63 | |
76 | |
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77 | enum { |
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78 | INCR_M_WS = 0, // initial whitespace skipping, must be 0 |
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79 | INCR_M_STR, // inside string |
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80 | INCR_M_BS, // inside backslash |
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81 | INCR_M_JSON // outside anything, count nesting |
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82 | }; |
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83 | |
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84 | #define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON) |
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85 | |
64 | typedef struct json { |
86 | typedef struct { |
65 | U32 flags; |
87 | U32 flags; |
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88 | U32 max_depth; |
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89 | STRLEN max_size; |
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90 | |
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91 | SV *cb_object; |
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92 | HV *cb_sk_object; |
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93 | |
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94 | // for the incremental parser |
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95 | SV *incr_text; // the source text so far |
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96 | STRLEN incr_pos; // the current offset into the text |
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97 | int incr_nest; // {[]}-nesting level |
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98 | unsigned char incr_mode; |
66 | } JSON__XS; |
99 | } JSON; |
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100 | |
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101 | INLINE void |
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102 | json_init (JSON *json) |
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103 | { |
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104 | Zero (json, 1, JSON); |
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105 | json->max_depth = 512; |
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106 | } |
67 | |
107 | |
68 | ///////////////////////////////////////////////////////////////////////////// |
108 | ///////////////////////////////////////////////////////////////////////////// |
69 | // utility functions |
109 | // utility functions |
70 | |
110 | |
71 | static UV * |
111 | INLINE SV * |
72 | SvJSON (SV *sv) |
112 | get_bool (const char *name) |
73 | { |
113 | { |
74 | if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
114 | SV *sv = get_sv (name, 1); |
75 | croak ("object is not of type JSON::XS"); |
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76 | |
115 | |
77 | return &SvUVX (SvRV (sv)); |
116 | SvREADONLY_on (sv); |
78 | } |
117 | SvREADONLY_on (SvRV (sv)); |
79 | |
118 | |
80 | static void |
119 | return sv; |
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120 | } |
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121 | |
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122 | INLINE void |
81 | shrink (SV *sv) |
123 | shrink (SV *sv) |
82 | { |
124 | { |
83 | sv_utf8_downgrade (sv, 1); |
125 | sv_utf8_downgrade (sv, 1); |
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126 | |
84 | if (SvLEN (sv) > SvCUR (sv) + 1) |
127 | if (SvLEN (sv) > SvCUR (sv) + 1) |
85 | { |
128 | { |
86 | #ifdef SvPV_shrink_to_cur |
129 | #ifdef SvPV_shrink_to_cur |
87 | SvPV_shrink_to_cur (sv); |
130 | SvPV_shrink_to_cur (sv); |
88 | #elif defined (SvPV_renew) |
131 | #elif defined (SvPV_renew) |
… | |
… | |
94 | // decode an utf-8 character and return it, or (UV)-1 in |
137 | // decode an utf-8 character and return it, or (UV)-1 in |
95 | // case of an error. |
138 | // case of an error. |
96 | // we special-case "safe" characters from U+80 .. U+7FF, |
139 | // we special-case "safe" characters from U+80 .. U+7FF, |
97 | // but use the very good perl function to parse anything else. |
140 | // but use the very good perl function to parse anything else. |
98 | // note that we never call this function for a ascii codepoints |
141 | // note that we never call this function for a ascii codepoints |
99 | inline UV |
142 | INLINE UV |
100 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
143 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
101 | { |
144 | { |
102 | if (expect_false (s[0] > 0xdf || s[0] < 0xc2)) |
145 | if (expect_true (len >= 2 |
103 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
146 | && IN_RANGE_INC (char, s[0], 0xc2, 0xdf) |
104 | else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) |
147 | && IN_RANGE_INC (char, s[1], 0x80, 0xbf))) |
105 | { |
148 | { |
106 | *clen = 2; |
149 | *clen = 2; |
107 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
150 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
108 | } |
151 | } |
109 | else |
152 | else |
110 | { |
153 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
111 | *clen = (STRLEN)-1; |
154 | } |
112 | return (UV)-1; |
155 | |
113 | } |
156 | // likewise for encoding, also never called for ascii codepoints |
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157 | // this function takes advantage of this fact, although current gccs |
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158 | // seem to optimise the check for >= 0x80 away anyways |
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159 | INLINE unsigned char * |
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160 | encode_utf8 (unsigned char *s, UV ch) |
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161 | { |
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162 | if (expect_false (ch < 0x000080)) |
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163 | *s++ = ch; |
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164 | else if (expect_true (ch < 0x000800)) |
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165 | *s++ = 0xc0 | ( ch >> 6), |
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166 | *s++ = 0x80 | ( ch & 0x3f); |
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167 | else if ( ch < 0x010000) |
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168 | *s++ = 0xe0 | ( ch >> 12), |
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169 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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170 | *s++ = 0x80 | ( ch & 0x3f); |
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171 | else if ( ch < 0x110000) |
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172 | *s++ = 0xf0 | ( ch >> 18), |
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173 | *s++ = 0x80 | ((ch >> 12) & 0x3f), |
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174 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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175 | *s++ = 0x80 | ( ch & 0x3f); |
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176 | |
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177 | return s; |
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178 | } |
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179 | |
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180 | // convert offset pointer to character index, sv must be string |
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181 | static STRLEN |
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182 | ptr_to_index (SV *sv, char *offset) |
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183 | { |
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184 | return SvUTF8 (sv) |
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185 | ? utf8_distance (offset, SvPVX (sv)) |
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186 | : offset - SvPVX (sv); |
114 | } |
187 | } |
115 | |
188 | |
116 | ///////////////////////////////////////////////////////////////////////////// |
189 | ///////////////////////////////////////////////////////////////////////////// |
117 | // encoder |
190 | // encoder |
118 | |
191 | |
… | |
… | |
120 | typedef struct |
193 | typedef struct |
121 | { |
194 | { |
122 | char *cur; // SvPVX (sv) + current output position |
195 | char *cur; // SvPVX (sv) + current output position |
123 | char *end; // SvEND (sv) |
196 | char *end; // SvEND (sv) |
124 | SV *sv; // result scalar |
197 | SV *sv; // result scalar |
125 | struct json json; |
198 | JSON json; |
126 | U32 indent; // indentation level |
199 | U32 indent; // indentation level |
127 | U32 maxdepth; // max. indentation/recursion level |
200 | UV limit; // escape character values >= this value when encoding |
128 | } enc_t; |
201 | } enc_t; |
129 | |
202 | |
130 | inline void |
203 | INLINE void |
131 | need (enc_t *enc, STRLEN len) |
204 | need (enc_t *enc, STRLEN len) |
132 | { |
205 | { |
133 | if (expect_false (enc->cur + len >= enc->end)) |
206 | if (expect_false (enc->cur + len >= enc->end)) |
134 | { |
207 | { |
135 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
208 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
136 | SvGROW (enc->sv, cur + len + 1); |
209 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
137 | enc->cur = SvPVX (enc->sv) + cur; |
210 | enc->cur = SvPVX (enc->sv) + cur; |
138 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
211 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
139 | } |
212 | } |
140 | } |
213 | } |
141 | |
214 | |
142 | inline void |
215 | INLINE void |
143 | encode_ch (enc_t *enc, char ch) |
216 | encode_ch (enc_t *enc, char ch) |
144 | { |
217 | { |
145 | need (enc, 1); |
218 | need (enc, 1); |
146 | *enc->cur++ = ch; |
219 | *enc->cur++ = ch; |
147 | } |
220 | } |
… | |
… | |
201 | { |
274 | { |
202 | uch = ch; |
275 | uch = ch; |
203 | clen = 1; |
276 | clen = 1; |
204 | } |
277 | } |
205 | |
278 | |
206 | if (uch > 0x10FFFFUL) |
279 | if (uch < 0x80/*0x20*/ || uch >= enc->limit) |
207 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
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208 | |
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209 | if (uch < 0x80 || enc->json.flags & F_ASCII || (enc->json.flags & F_LATIN1 && uch > 0xFF)) |
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210 | { |
280 | { |
211 | if (uch > 0xFFFFUL) |
281 | if (uch >= 0x10000UL) |
212 | { |
282 | { |
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283 | if (uch >= 0x110000UL) |
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284 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
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285 | |
213 | need (enc, len += 11); |
286 | need (enc, len += 11); |
214 | sprintf (enc->cur, "\\u%04x\\u%04x", |
287 | sprintf (enc->cur, "\\u%04x\\u%04x", |
215 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
288 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
216 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
289 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
217 | enc->cur += 12; |
290 | enc->cur += 12; |
218 | } |
291 | } |
219 | else |
292 | else |
220 | { |
293 | { |
221 | static char hexdigit [16] = "0123456789abcdef"; |
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222 | need (enc, len += 5); |
294 | need (enc, len += 5); |
223 | *enc->cur++ = '\\'; |
295 | *enc->cur++ = '\\'; |
224 | *enc->cur++ = 'u'; |
296 | *enc->cur++ = 'u'; |
225 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
297 | *enc->cur++ = PL_hexdigit [ uch >> 12 ]; |
226 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
298 | *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; |
227 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
299 | *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; |
228 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
300 | *enc->cur++ = PL_hexdigit [(uch >> 0) & 15]; |
229 | } |
301 | } |
230 | |
302 | |
231 | str += clen; |
303 | str += clen; |
232 | } |
304 | } |
233 | else if (enc->json.flags & F_LATIN1) |
305 | else if (enc->json.flags & F_LATIN1) |
… | |
… | |
245 | while (--clen); |
317 | while (--clen); |
246 | } |
318 | } |
247 | else |
319 | else |
248 | { |
320 | { |
249 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
321 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
250 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
322 | enc->cur = encode_utf8 (enc->cur, uch); |
251 | ++str; |
323 | ++str; |
252 | } |
324 | } |
253 | } |
325 | } |
254 | } |
326 | } |
255 | } |
327 | } |
256 | |
328 | |
257 | --len; |
329 | --len; |
258 | } |
330 | } |
259 | } |
331 | } |
260 | |
332 | |
261 | inline void |
333 | INLINE void |
262 | encode_indent (enc_t *enc) |
334 | encode_indent (enc_t *enc) |
263 | { |
335 | { |
264 | if (enc->json.flags & F_INDENT) |
336 | if (enc->json.flags & F_INDENT) |
265 | { |
337 | { |
266 | int spaces = enc->indent * INDENT_STEP; |
338 | int spaces = enc->indent * INDENT_STEP; |
… | |
… | |
269 | memset (enc->cur, ' ', spaces); |
341 | memset (enc->cur, ' ', spaces); |
270 | enc->cur += spaces; |
342 | enc->cur += spaces; |
271 | } |
343 | } |
272 | } |
344 | } |
273 | |
345 | |
274 | inline void |
346 | INLINE void |
275 | encode_space (enc_t *enc) |
347 | encode_space (enc_t *enc) |
276 | { |
348 | { |
277 | need (enc, 1); |
349 | need (enc, 1); |
278 | encode_ch (enc, ' '); |
350 | encode_ch (enc, ' '); |
279 | } |
351 | } |
280 | |
352 | |
281 | inline void |
353 | INLINE void |
282 | encode_nl (enc_t *enc) |
354 | encode_nl (enc_t *enc) |
283 | { |
355 | { |
284 | if (enc->json.flags & F_INDENT) |
356 | if (enc->json.flags & F_INDENT) |
285 | { |
357 | { |
286 | need (enc, 1); |
358 | need (enc, 1); |
287 | encode_ch (enc, '\n'); |
359 | encode_ch (enc, '\n'); |
288 | } |
360 | } |
289 | } |
361 | } |
290 | |
362 | |
291 | inline void |
363 | INLINE void |
292 | encode_comma (enc_t *enc) |
364 | encode_comma (enc_t *enc) |
293 | { |
365 | { |
294 | encode_ch (enc, ','); |
366 | encode_ch (enc, ','); |
295 | |
367 | |
296 | if (enc->json.flags & F_INDENT) |
368 | if (enc->json.flags & F_INDENT) |
… | |
… | |
304 | static void |
376 | static void |
305 | encode_av (enc_t *enc, AV *av) |
377 | encode_av (enc_t *enc, AV *av) |
306 | { |
378 | { |
307 | int i, len = av_len (av); |
379 | int i, len = av_len (av); |
308 | |
380 | |
309 | if (enc->indent >= enc->maxdepth) |
381 | if (enc->indent >= enc->json.max_depth) |
310 | croak ("data structure too deep (hit recursion limit)"); |
382 | croak (ERR_NESTING_EXCEEDED); |
311 | |
383 | |
312 | encode_ch (enc, '['); encode_nl (enc); |
384 | encode_ch (enc, '['); |
313 | ++enc->indent; |
385 | |
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386 | if (len >= 0) |
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387 | { |
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388 | encode_nl (enc); ++enc->indent; |
314 | |
389 | |
315 | for (i = 0; i <= len; ++i) |
390 | for (i = 0; i <= len; ++i) |
316 | { |
391 | { |
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392 | SV **svp = av_fetch (av, i, 0); |
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393 | |
317 | encode_indent (enc); |
394 | encode_indent (enc); |
318 | encode_sv (enc, *av_fetch (av, i, 0)); |
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319 | |
395 | |
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396 | if (svp) |
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397 | encode_sv (enc, *svp); |
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398 | else |
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399 | encode_str (enc, "null", 4, 0); |
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400 | |
320 | if (i < len) |
401 | if (i < len) |
321 | encode_comma (enc); |
402 | encode_comma (enc); |
322 | } |
403 | } |
323 | |
404 | |
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405 | encode_nl (enc); --enc->indent; encode_indent (enc); |
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406 | } |
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407 | |
324 | encode_nl (enc); |
408 | encode_ch (enc, ']'); |
325 | |
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326 | --enc->indent; |
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327 | encode_indent (enc); encode_ch (enc, ']'); |
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328 | } |
409 | } |
329 | |
410 | |
330 | static void |
411 | static void |
331 | encode_he (enc_t *enc, HE *he) |
412 | encode_hk (enc_t *enc, HE *he) |
332 | { |
413 | { |
333 | encode_ch (enc, '"'); |
414 | encode_ch (enc, '"'); |
334 | |
415 | |
335 | if (HeKLEN (he) == HEf_SVKEY) |
416 | if (HeKLEN (he) == HEf_SVKEY) |
336 | { |
417 | { |
… | |
… | |
349 | encode_ch (enc, '"'); |
430 | encode_ch (enc, '"'); |
350 | |
431 | |
351 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
432 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
352 | encode_ch (enc, ':'); |
433 | encode_ch (enc, ':'); |
353 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
434 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
354 | encode_sv (enc, HeVAL (he)); |
|
|
355 | } |
435 | } |
356 | |
436 | |
357 | // compare hash entries, used when all keys are bytestrings |
437 | // compare hash entries, used when all keys are bytestrings |
358 | static int |
438 | static int |
359 | he_cmp_fast (const void *a_, const void *b_) |
439 | he_cmp_fast (const void *a_, const void *b_) |
… | |
… | |
364 | HE *b = *(HE **)b_; |
444 | HE *b = *(HE **)b_; |
365 | |
445 | |
366 | STRLEN la = HeKLEN (a); |
446 | STRLEN la = HeKLEN (a); |
367 | STRLEN lb = HeKLEN (b); |
447 | STRLEN lb = HeKLEN (b); |
368 | |
448 | |
369 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
449 | if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la))) |
370 | cmp = la - lb; |
450 | cmp = lb - la; |
371 | |
451 | |
372 | return cmp; |
452 | return cmp; |
373 | } |
453 | } |
374 | |
454 | |
375 | // compare hash entries, used when some keys are sv's or utf-x |
455 | // compare hash entries, used when some keys are sv's or utf-x |
376 | static int |
456 | static int |
377 | he_cmp_slow (const void *a, const void *b) |
457 | he_cmp_slow (const void *a, const void *b) |
378 | { |
458 | { |
379 | return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
459 | return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a)); |
380 | } |
460 | } |
381 | |
461 | |
382 | static void |
462 | static void |
383 | encode_hv (enc_t *enc, HV *hv) |
463 | encode_hv (enc_t *enc, HV *hv) |
384 | { |
464 | { |
385 | int count, i; |
465 | HE *he; |
386 | |
466 | |
387 | if (enc->indent >= enc->maxdepth) |
467 | if (enc->indent >= enc->json.max_depth) |
388 | croak ("data structure too deep (hit recursion limit)"); |
468 | croak (ERR_NESTING_EXCEEDED); |
389 | |
469 | |
390 | encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
470 | encode_ch (enc, '{'); |
391 | |
471 | |
392 | if ((count = hv_iterinit (hv))) |
|
|
393 | { |
|
|
394 | // for canonical output we have to sort by keys first |
472 | // for canonical output we have to sort by keys first |
395 | // actually, this is mostly due to the stupid so-called |
473 | // actually, this is mostly due to the stupid so-called |
396 | // security workaround added somewhere in 5.8.x. |
474 | // security workaround added somewhere in 5.8.x |
397 | // that randomises hash orderings |
475 | // that randomises hash orderings |
398 | if (enc->json.flags & F_CANONICAL) |
476 | if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv)) |
|
|
477 | { |
|
|
478 | int count = hv_iterinit (hv); |
|
|
479 | |
|
|
480 | if (SvMAGICAL (hv)) |
399 | { |
481 | { |
|
|
482 | // need to count by iterating. could improve by dynamically building the vector below |
|
|
483 | // but I don't care for the speed of this special case. |
|
|
484 | // note also that we will run into undefined behaviour when the two iterations |
|
|
485 | // do not result in the same count, something I might care for in some later release. |
|
|
486 | |
|
|
487 | count = 0; |
|
|
488 | while (hv_iternext (hv)) |
|
|
489 | ++count; |
|
|
490 | |
|
|
491 | hv_iterinit (hv); |
|
|
492 | } |
|
|
493 | |
|
|
494 | if (count) |
|
|
495 | { |
400 | int fast = 1; |
496 | int i, fast = 1; |
401 | HE *he; |
|
|
402 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
497 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
403 | HE **hes = _alloca (count * sizeof (HE)); |
498 | HE **hes = _alloca (count * sizeof (HE)); |
404 | #else |
499 | #else |
405 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
500 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
406 | #endif |
501 | #endif |
… | |
… | |
433 | |
528 | |
434 | FREETMPS; |
529 | FREETMPS; |
435 | LEAVE; |
530 | LEAVE; |
436 | } |
531 | } |
437 | |
532 | |
438 | for (i = 0; i < count; ++i) |
533 | encode_nl (enc); ++enc->indent; |
|
|
534 | |
|
|
535 | while (count--) |
439 | { |
536 | { |
440 | encode_indent (enc); |
537 | encode_indent (enc); |
|
|
538 | he = hes [count]; |
441 | encode_he (enc, hes [i]); |
539 | encode_hk (enc, he); |
|
|
540 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
442 | |
541 | |
443 | if (i < count - 1) |
542 | if (count) |
444 | encode_comma (enc); |
543 | encode_comma (enc); |
445 | } |
544 | } |
446 | |
545 | |
447 | encode_nl (enc); |
546 | encode_nl (enc); --enc->indent; encode_indent (enc); |
448 | } |
547 | } |
|
|
548 | } |
449 | else |
549 | else |
|
|
550 | { |
|
|
551 | if (hv_iterinit (hv) || SvMAGICAL (hv)) |
|
|
552 | if ((he = hv_iternext (hv))) |
450 | { |
553 | { |
451 | HE *he = hv_iternext (hv); |
554 | encode_nl (enc); ++enc->indent; |
452 | |
555 | |
453 | for (;;) |
556 | for (;;) |
454 | { |
557 | { |
455 | encode_indent (enc); |
558 | encode_indent (enc); |
456 | encode_he (enc, he); |
559 | encode_hk (enc, he); |
|
|
560 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
457 | |
561 | |
458 | if (!(he = hv_iternext (hv))) |
562 | if (!(he = hv_iternext (hv))) |
459 | break; |
563 | break; |
460 | |
564 | |
461 | encode_comma (enc); |
565 | encode_comma (enc); |
462 | } |
566 | } |
463 | |
567 | |
464 | encode_nl (enc); |
568 | encode_nl (enc); --enc->indent; encode_indent (enc); |
465 | } |
569 | } |
466 | } |
570 | } |
467 | |
571 | |
468 | --enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
572 | encode_ch (enc, '}'); |
469 | } |
573 | } |
470 | |
574 | |
471 | // encode objects, arrays and special \0=false and \1=true values. |
575 | // encode objects, arrays and special \0=false and \1=true values. |
472 | static void |
576 | static void |
473 | encode_rv (enc_t *enc, SV *sv) |
577 | encode_rv (enc_t *enc, SV *sv) |
… | |
… | |
477 | SvGETMAGIC (sv); |
581 | SvGETMAGIC (sv); |
478 | svt = SvTYPE (sv); |
582 | svt = SvTYPE (sv); |
479 | |
583 | |
480 | if (expect_false (SvOBJECT (sv))) |
584 | if (expect_false (SvOBJECT (sv))) |
481 | { |
585 | { |
|
|
586 | HV *stash = !JSON_SLOW || json_boolean_stash |
|
|
587 | ? json_boolean_stash |
|
|
588 | : gv_stashpv ("JSON::XS::Boolean", 1); |
|
|
589 | |
482 | if (SvSTASH (sv) == json_boolean_stash) |
590 | if (SvSTASH (sv) == stash) |
483 | { |
591 | { |
484 | if (SvIV (sv) == 0) |
592 | if (SvIV (sv)) |
|
|
593 | encode_str (enc, "true", 4, 0); |
|
|
594 | else |
485 | encode_str (enc, "false", 5, 0); |
595 | encode_str (enc, "false", 5, 0); |
486 | else |
|
|
487 | encode_str (enc, "true", 4, 0); |
|
|
488 | } |
596 | } |
489 | else |
597 | else |
490 | { |
598 | { |
491 | #if 0 |
599 | #if 0 |
492 | if (0 && sv_derived_from (rv, "JSON::Literal")) |
600 | if (0 && sv_derived_from (rv, "JSON::Literal")) |
… | |
… | |
495 | } |
603 | } |
496 | #endif |
604 | #endif |
497 | if (enc->json.flags & F_CONV_BLESSED) |
605 | if (enc->json.flags & F_CONV_BLESSED) |
498 | { |
606 | { |
499 | // we re-bless the reference to get overload and other niceties right |
607 | // we re-bless the reference to get overload and other niceties right |
500 | GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1); |
608 | GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0); |
501 | |
609 | |
502 | if (to_json) |
610 | if (to_json) |
503 | { |
611 | { |
504 | dSP; |
612 | dSP; |
505 | ENTER; |
613 | |
506 | SAVETMPS; |
|
|
507 | PUSHMARK (SP); |
614 | ENTER; SAVETMPS; PUSHMARK (SP); |
508 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
615 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
509 | |
616 | |
510 | // calling with G_SCALAR ensures that we always get a 1 reutrn value |
617 | // calling with G_SCALAR ensures that we always get a 1 return value |
511 | // check anyways. |
|
|
512 | PUTBACK; |
618 | PUTBACK; |
513 | assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR)); |
619 | call_sv ((SV *)GvCV (to_json), G_SCALAR); |
514 | SPAGAIN; |
620 | SPAGAIN; |
515 | |
621 | |
|
|
622 | // catch this surprisingly common error |
|
|
623 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
624 | croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
625 | |
|
|
626 | sv = POPs; |
|
|
627 | PUTBACK; |
|
|
628 | |
516 | encode_sv (enc, POPs); |
629 | encode_sv (enc, sv); |
517 | |
630 | |
518 | FREETMPS; |
631 | FREETMPS; LEAVE; |
519 | LEAVE; |
|
|
520 | } |
632 | } |
521 | else if (enc->json.flags & F_ALLOW_BLESSED) |
633 | else if (enc->json.flags & F_ALLOW_BLESSED) |
522 | encode_str (enc, "null", 4, 0); |
634 | encode_str (enc, "null", 4, 0); |
523 | else |
635 | else |
524 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it", |
636 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it", |
… | |
… | |
535 | encode_hv (enc, (HV *)sv); |
647 | encode_hv (enc, (HV *)sv); |
536 | else if (svt == SVt_PVAV) |
648 | else if (svt == SVt_PVAV) |
537 | encode_av (enc, (AV *)sv); |
649 | encode_av (enc, (AV *)sv); |
538 | else if (svt < SVt_PVAV) |
650 | else if (svt < SVt_PVAV) |
539 | { |
651 | { |
540 | if (SvNIOK (sv) && SvIV (sv) == 0) |
652 | STRLEN len = 0; |
|
|
653 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
654 | |
|
|
655 | if (len == 1 && *pv == '1') |
|
|
656 | encode_str (enc, "true", 4, 0); |
|
|
657 | else if (len == 1 && *pv == '0') |
541 | encode_str (enc, "false", 5, 0); |
658 | encode_str (enc, "false", 5, 0); |
542 | else if (SvNIOK (sv) && SvIV (sv) == 1) |
659 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
543 | encode_str (enc, "true", 4, 0); |
660 | encode_str (enc, "null", 4, 0); |
544 | else |
661 | else |
545 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
662 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
546 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
663 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
547 | } |
664 | } |
|
|
665 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
666 | encode_str (enc, "null", 4, 0); |
548 | else |
667 | else |
549 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
668 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
550 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
669 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
551 | } |
670 | } |
552 | |
671 | |
… | |
… | |
570 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
689 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
571 | enc->cur += strlen (enc->cur); |
690 | enc->cur += strlen (enc->cur); |
572 | } |
691 | } |
573 | else if (SvIOKp (sv)) |
692 | else if (SvIOKp (sv)) |
574 | { |
693 | { |
575 | // we assume we can always read an IV as a UV |
694 | // we assume we can always read an IV as a UV and vice versa |
576 | if (SvUV (sv) & ~(UV)0x7fff) |
695 | // we assume two's complement |
577 | { |
696 | // we assume no aliasing issues in the union |
578 | // large integer, use the (rather slow) snprintf way. |
697 | if (SvIsUV (sv) ? SvUVX (sv) <= 59000 |
579 | need (enc, sizeof (UV) * 3); |
698 | : SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000) |
580 | enc->cur += |
|
|
581 | SvIsUV(sv) |
|
|
582 | ? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv)) |
|
|
583 | : snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv)); |
|
|
584 | } |
|
|
585 | else |
|
|
586 | { |
699 | { |
587 | // optimise the "small number case" |
700 | // optimise the "small number case" |
588 | // code will likely be branchless and use only a single multiplication |
701 | // code will likely be branchless and use only a single multiplication |
|
|
702 | // works for numbers up to 59074 |
589 | I32 i = SvIV (sv); |
703 | I32 i = SvIVX (sv); |
590 | U32 u; |
704 | U32 u; |
591 | char digit, nz = 0; |
705 | char digit, nz = 0; |
592 | |
706 | |
593 | need (enc, 6); |
707 | need (enc, 6); |
594 | |
708 | |
… | |
… | |
600 | |
714 | |
601 | // now output digit by digit, each time masking out the integer part |
715 | // now output digit by digit, each time masking out the integer part |
602 | // and multiplying by 5 while moving the decimal point one to the right, |
716 | // and multiplying by 5 while moving the decimal point one to the right, |
603 | // resulting in a net multiplication by 10. |
717 | // resulting in a net multiplication by 10. |
604 | // we always write the digit to memory but conditionally increment |
718 | // we always write the digit to memory but conditionally increment |
605 | // the pointer, to ease the usage of conditional move instructions. |
719 | // the pointer, to enable the use of conditional move instructions. |
606 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffff) * 5; |
720 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffffUL) * 5; |
607 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffff) * 5; |
721 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffffUL) * 5; |
608 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffff) * 5; |
722 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffffUL) * 5; |
609 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffff) * 5; |
723 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffffUL) * 5; |
610 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
724 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
611 | } |
725 | } |
|
|
726 | else |
|
|
727 | { |
|
|
728 | // large integer, use the (rather slow) snprintf way. |
|
|
729 | need (enc, IVUV_MAXCHARS); |
|
|
730 | enc->cur += |
|
|
731 | SvIsUV(sv) |
|
|
732 | ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) |
|
|
733 | : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); |
|
|
734 | } |
612 | } |
735 | } |
613 | else if (SvROK (sv)) |
736 | else if (SvROK (sv)) |
614 | encode_rv (enc, SvRV (sv)); |
737 | encode_rv (enc, SvRV (sv)); |
615 | else if (!SvOK (sv)) |
738 | else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) |
616 | encode_str (enc, "null", 4, 0); |
739 | encode_str (enc, "null", 4, 0); |
617 | else |
740 | else |
618 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
741 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
619 | SvPV_nolen (sv), SvFLAGS (sv)); |
742 | SvPV_nolen (sv), SvFLAGS (sv)); |
620 | } |
743 | } |
621 | |
744 | |
622 | static SV * |
745 | static SV * |
623 | encode_json (SV *scalar, struct json *json) |
746 | encode_json (SV *scalar, JSON *json) |
624 | { |
747 | { |
625 | enc_t enc; |
748 | enc_t enc; |
626 | |
749 | |
627 | if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
750 | if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
628 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
751 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
… | |
… | |
630 | enc.json = *json; |
753 | enc.json = *json; |
631 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
754 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
632 | enc.cur = SvPVX (enc.sv); |
755 | enc.cur = SvPVX (enc.sv); |
633 | enc.end = SvEND (enc.sv); |
756 | enc.end = SvEND (enc.sv); |
634 | enc.indent = 0; |
757 | enc.indent = 0; |
635 | enc.maxdepth = DEC_DEPTH (enc.json.flags); |
758 | enc.limit = enc.json.flags & F_ASCII ? 0x000080UL |
|
|
759 | : enc.json.flags & F_LATIN1 ? 0x000100UL |
|
|
760 | : 0x110000UL; |
636 | |
761 | |
637 | SvPOK_only (enc.sv); |
762 | SvPOK_only (enc.sv); |
638 | encode_sv (&enc, scalar); |
763 | encode_sv (&enc, scalar); |
|
|
764 | encode_nl (&enc); |
639 | |
765 | |
640 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
766 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
641 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
767 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
642 | |
768 | |
643 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
769 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
… | |
… | |
656 | typedef struct |
782 | typedef struct |
657 | { |
783 | { |
658 | char *cur; // current parser pointer |
784 | char *cur; // current parser pointer |
659 | char *end; // end of input string |
785 | char *end; // end of input string |
660 | const char *err; // parse error, if != 0 |
786 | const char *err; // parse error, if != 0 |
661 | struct json json; |
787 | JSON json; |
662 | U32 depth; // recursion depth |
788 | U32 depth; // recursion depth |
663 | U32 maxdepth; // recursion depth limit |
789 | U32 maxdepth; // recursion depth limit |
664 | } dec_t; |
790 | } dec_t; |
665 | |
791 | |
666 | inline void |
792 | INLINE void |
|
|
793 | decode_comment (dec_t *dec) |
|
|
794 | { |
|
|
795 | // only '#'-style comments allowed a.t.m. |
|
|
796 | |
|
|
797 | while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d) |
|
|
798 | ++dec->cur; |
|
|
799 | } |
|
|
800 | |
|
|
801 | INLINE void |
667 | decode_ws (dec_t *dec) |
802 | decode_ws (dec_t *dec) |
668 | { |
803 | { |
669 | for (;;) |
804 | for (;;) |
670 | { |
805 | { |
671 | char ch = *dec->cur; |
806 | char ch = *dec->cur; |
672 | |
807 | |
673 | if (ch > 0x20 |
808 | if (ch > 0x20) |
|
|
809 | { |
|
|
810 | if (expect_false (ch == '#')) |
|
|
811 | { |
|
|
812 | if (dec->json.flags & F_RELAXED) |
|
|
813 | decode_comment (dec); |
|
|
814 | else |
|
|
815 | break; |
|
|
816 | } |
|
|
817 | else |
|
|
818 | break; |
|
|
819 | } |
674 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
820 | else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09) |
675 | break; |
821 | break; // parse error, but let higher level handle it, gives better error messages |
676 | |
822 | |
677 | ++dec->cur; |
823 | ++dec->cur; |
678 | } |
824 | } |
679 | } |
825 | } |
680 | |
826 | |
… | |
… | |
684 | if (*dec->cur != ch) \ |
830 | if (*dec->cur != ch) \ |
685 | ERR (# ch " expected"); \ |
831 | ERR (# ch " expected"); \ |
686 | ++dec->cur; \ |
832 | ++dec->cur; \ |
687 | SE |
833 | SE |
688 | |
834 | |
689 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
835 | #define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED) |
690 | #define DEC_DEC_DEPTH --dec->depth |
836 | #define DEC_DEC_DEPTH --dec->depth |
691 | |
837 | |
692 | static SV *decode_sv (dec_t *dec); |
838 | static SV *decode_sv (dec_t *dec); |
693 | |
839 | |
694 | static signed char decode_hexdigit[256]; |
840 | static signed char decode_hexdigit[256]; |
… | |
… | |
786 | |
932 | |
787 | if (hi >= 0x80) |
933 | if (hi >= 0x80) |
788 | { |
934 | { |
789 | utf8 = 1; |
935 | utf8 = 1; |
790 | |
936 | |
791 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
937 | cur = encode_utf8 (cur, hi); |
792 | } |
938 | } |
793 | else |
939 | else |
794 | *cur++ = hi; |
940 | *cur++ = hi; |
795 | } |
941 | } |
796 | break; |
942 | break; |
… | |
… | |
798 | default: |
944 | default: |
799 | --dec_cur; |
945 | --dec_cur; |
800 | ERR ("illegal backslash escape sequence in string"); |
946 | ERR ("illegal backslash escape sequence in string"); |
801 | } |
947 | } |
802 | } |
948 | } |
803 | else if (expect_true (ch >= 0x20 && ch <= 0x7f)) |
949 | else if (expect_true (ch >= 0x20 && ch < 0x80)) |
804 | *cur++ = ch; |
950 | *cur++ = ch; |
805 | else if (ch >= 0x80) |
951 | else if (ch >= 0x80) |
806 | { |
952 | { |
807 | STRLEN clen; |
953 | STRLEN clen; |
808 | UV uch; |
|
|
809 | |
954 | |
810 | --dec_cur; |
955 | --dec_cur; |
811 | |
956 | |
812 | uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
957 | decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
813 | if (clen == (STRLEN)-1) |
958 | if (clen == (STRLEN)-1) |
814 | ERR ("malformed UTF-8 character in JSON string"); |
959 | ERR ("malformed UTF-8 character in JSON string"); |
815 | |
960 | |
816 | do |
961 | do |
817 | *cur++ = *dec_cur++; |
962 | *cur++ = *dec_cur++; |
… | |
… | |
834 | { |
979 | { |
835 | STRLEN len = cur - buf; |
980 | STRLEN len = cur - buf; |
836 | |
981 | |
837 | if (sv) |
982 | if (sv) |
838 | { |
983 | { |
839 | SvGROW (sv, SvCUR (sv) + len + 1); |
984 | STRLEN cur = SvCUR (sv); |
|
|
985 | |
|
|
986 | if (SvLEN (sv) <= cur + len) |
|
|
987 | SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
|
|
988 | |
840 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
989 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
841 | SvCUR_set (sv, SvCUR (sv) + len); |
990 | SvCUR_set (sv, SvCUR (sv) + len); |
842 | } |
991 | } |
843 | else |
992 | else |
844 | sv = newSVpvn (buf, len); |
993 | sv = newSVpvn (buf, len); |
… | |
… | |
929 | is_nv = 1; |
1078 | is_nv = 1; |
930 | } |
1079 | } |
931 | |
1080 | |
932 | if (!is_nv) |
1081 | if (!is_nv) |
933 | { |
1082 | { |
|
|
1083 | int len = dec->cur - start; |
|
|
1084 | |
934 | // special case the rather common 1..4-digit-int case, assumes 32 bit ints or so |
1085 | // special case the rather common 1..5-digit-int case |
935 | if (*start == '-') |
1086 | if (*start == '-') |
936 | switch (dec->cur - start) |
1087 | switch (len) |
937 | { |
1088 | { |
938 | case 2: return newSViv (-( start [1] - '0' * 1)); |
1089 | case 2: return newSViv (-(IV)( start [1] - '0' * 1)); |
939 | case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11)); |
1090 | case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11)); |
940 | case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
1091 | case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
941 | case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
1092 | case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
|
|
1093 | case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111)); |
942 | } |
1094 | } |
943 | else |
1095 | else |
944 | switch (dec->cur - start) |
1096 | switch (len) |
945 | { |
1097 | { |
946 | case 1: return newSViv ( start [0] - '0' * 1); |
1098 | case 1: return newSViv ( start [0] - '0' * 1); |
947 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
1099 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
948 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
1100 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
949 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
1101 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
1102 | case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111); |
950 | } |
1103 | } |
951 | |
1104 | |
952 | { |
1105 | { |
953 | UV uv; |
1106 | UV uv; |
954 | int numtype = grok_number (start, dec->cur - start, &uv); |
1107 | int numtype = grok_number (start, len, &uv); |
955 | if (numtype & IS_NUMBER_IN_UV) |
1108 | if (numtype & IS_NUMBER_IN_UV) |
956 | if (numtype & IS_NUMBER_NEG) |
1109 | if (numtype & IS_NUMBER_NEG) |
957 | { |
1110 | { |
958 | if (uv < (UV)IV_MIN) |
1111 | if (uv < (UV)IV_MIN) |
959 | return newSViv (-(IV)uv); |
1112 | return newSViv (-(IV)uv); |
960 | } |
1113 | } |
961 | else |
1114 | else |
962 | return newSVuv (uv); |
1115 | return newSVuv (uv); |
963 | |
|
|
964 | // here would likely be the place for bigint support |
|
|
965 | } |
1116 | } |
966 | } |
|
|
967 | |
1117 | |
968 | // if we ever support bigint or bigfloat, this is the place for bigfloat |
1118 | len -= *start == '-' ? 1 : 0; |
|
|
1119 | |
|
|
1120 | // does not fit into IV or UV, try NV |
|
|
1121 | if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len) |
|
|
1122 | #if defined (LDBL_DIG) |
|
|
1123 | || (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len) |
|
|
1124 | #endif |
|
|
1125 | ) |
|
|
1126 | // fits into NV without loss of precision |
|
|
1127 | return newSVnv (Atof (start)); |
|
|
1128 | |
|
|
1129 | // everything else fails, convert it to a string |
|
|
1130 | return newSVpvn (start, dec->cur - start); |
|
|
1131 | } |
|
|
1132 | |
|
|
1133 | // loss of precision here |
969 | return newSVnv (Atof (start)); |
1134 | return newSVnv (Atof (start)); |
970 | |
1135 | |
971 | fail: |
1136 | fail: |
972 | return 0; |
1137 | return 0; |
973 | } |
1138 | } |
… | |
… | |
1003 | |
1168 | |
1004 | if (*dec->cur != ',') |
1169 | if (*dec->cur != ',') |
1005 | ERR (", or ] expected while parsing array"); |
1170 | ERR (", or ] expected while parsing array"); |
1006 | |
1171 | |
1007 | ++dec->cur; |
1172 | ++dec->cur; |
|
|
1173 | |
|
|
1174 | decode_ws (dec); |
|
|
1175 | |
|
|
1176 | if (*dec->cur == ']' && dec->json.flags & F_RELAXED) |
|
|
1177 | { |
|
|
1178 | ++dec->cur; |
|
|
1179 | break; |
|
|
1180 | } |
1008 | } |
1181 | } |
1009 | |
1182 | |
1010 | DEC_DEC_DEPTH; |
1183 | DEC_DEC_DEPTH; |
1011 | return newRV_noinc ((SV *)av); |
1184 | return newRV_noinc ((SV *)av); |
1012 | |
1185 | |
… | |
… | |
1017 | } |
1190 | } |
1018 | |
1191 | |
1019 | static SV * |
1192 | static SV * |
1020 | decode_hv (dec_t *dec) |
1193 | decode_hv (dec_t *dec) |
1021 | { |
1194 | { |
|
|
1195 | SV *sv; |
1022 | HV *hv = newHV (); |
1196 | HV *hv = newHV (); |
1023 | |
1197 | |
1024 | DEC_INC_DEPTH; |
1198 | DEC_INC_DEPTH; |
1025 | decode_ws (dec); |
1199 | decode_ws (dec); |
1026 | |
1200 | |
1027 | if (*dec->cur == '}') |
1201 | if (*dec->cur == '}') |
1028 | ++dec->cur; |
1202 | ++dec->cur; |
1029 | else |
1203 | else |
1030 | for (;;) |
1204 | for (;;) |
1031 | { |
1205 | { |
1032 | decode_ws (dec); EXPECT_CH ('"'); |
1206 | EXPECT_CH ('"'); |
1033 | |
1207 | |
1034 | // heuristic: assume that |
1208 | // heuristic: assume that |
1035 | // a) decode_str + hv_store_ent are abysmally slow. |
1209 | // a) decode_str + hv_store_ent are abysmally slow. |
1036 | // b) most hash keys are short, simple ascii text. |
1210 | // b) most hash keys are short, simple ascii text. |
1037 | // => try to "fast-match" such strings to avoid |
1211 | // => try to "fast-match" such strings to avoid |
… | |
… | |
1041 | char *p = dec->cur; |
1215 | char *p = dec->cur; |
1042 | char *e = p + 24; // only try up to 24 bytes |
1216 | char *e = p + 24; // only try up to 24 bytes |
1043 | |
1217 | |
1044 | for (;;) |
1218 | for (;;) |
1045 | { |
1219 | { |
1046 | // the >= 0x80 is true on most architectures |
1220 | // the >= 0x80 is false on most architectures |
1047 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1221 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1048 | { |
1222 | { |
1049 | // slow path, back up and use decode_str |
1223 | // slow path, back up and use decode_str |
1050 | SV *key = decode_str (dec); |
1224 | SV *key = decode_str (dec); |
1051 | if (!key) |
1225 | if (!key) |
1052 | goto fail; |
1226 | goto fail; |
1053 | |
1227 | |
1054 | decode_ws (dec); EXPECT_CH (':'); |
1228 | decode_ws (dec); EXPECT_CH (':'); |
1055 | |
1229 | |
|
|
1230 | decode_ws (dec); |
1056 | value = decode_sv (dec); |
1231 | value = decode_sv (dec); |
1057 | if (!value) |
1232 | if (!value) |
1058 | { |
1233 | { |
1059 | SvREFCNT_dec (key); |
1234 | SvREFCNT_dec (key); |
1060 | goto fail; |
1235 | goto fail; |
… | |
… | |
1072 | int len = p - key; |
1247 | int len = p - key; |
1073 | dec->cur = p + 1; |
1248 | dec->cur = p + 1; |
1074 | |
1249 | |
1075 | decode_ws (dec); EXPECT_CH (':'); |
1250 | decode_ws (dec); EXPECT_CH (':'); |
1076 | |
1251 | |
|
|
1252 | decode_ws (dec); |
1077 | value = decode_sv (dec); |
1253 | value = decode_sv (dec); |
1078 | if (!value) |
1254 | if (!value) |
1079 | goto fail; |
1255 | goto fail; |
1080 | |
1256 | |
1081 | hv_store (hv, key, len, value, 0); |
1257 | hv_store (hv, key, len, value, 0); |
… | |
… | |
1097 | |
1273 | |
1098 | if (*dec->cur != ',') |
1274 | if (*dec->cur != ',') |
1099 | ERR (", or } expected while parsing object/hash"); |
1275 | ERR (", or } expected while parsing object/hash"); |
1100 | |
1276 | |
1101 | ++dec->cur; |
1277 | ++dec->cur; |
|
|
1278 | |
|
|
1279 | decode_ws (dec); |
|
|
1280 | |
|
|
1281 | if (*dec->cur == '}' && dec->json.flags & F_RELAXED) |
|
|
1282 | { |
|
|
1283 | ++dec->cur; |
|
|
1284 | break; |
|
|
1285 | } |
1102 | } |
1286 | } |
1103 | |
1287 | |
1104 | DEC_DEC_DEPTH; |
1288 | DEC_DEC_DEPTH; |
1105 | return newRV_noinc ((SV *)hv); |
1289 | sv = newRV_noinc ((SV *)hv); |
|
|
1290 | |
|
|
1291 | // check filter callbacks |
|
|
1292 | if (dec->json.flags & F_HOOK) |
|
|
1293 | { |
|
|
1294 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
|
|
1295 | { |
|
|
1296 | HE *cb, *he; |
|
|
1297 | |
|
|
1298 | hv_iterinit (hv); |
|
|
1299 | he = hv_iternext (hv); |
|
|
1300 | hv_iterinit (hv); |
|
|
1301 | |
|
|
1302 | // the next line creates a mortal sv each time its called. |
|
|
1303 | // might want to optimise this for common cases. |
|
|
1304 | cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
1305 | |
|
|
1306 | if (cb) |
|
|
1307 | { |
|
|
1308 | dSP; |
|
|
1309 | int count; |
|
|
1310 | |
|
|
1311 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
1312 | XPUSHs (HeVAL (he)); |
|
|
1313 | |
|
|
1314 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
1315 | |
|
|
1316 | if (count == 1) |
|
|
1317 | { |
|
|
1318 | sv = newSVsv (POPs); |
|
|
1319 | FREETMPS; LEAVE; |
|
|
1320 | return sv; |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | FREETMPS; LEAVE; |
|
|
1324 | } |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | if (dec->json.cb_object) |
|
|
1328 | { |
|
|
1329 | dSP; |
|
|
1330 | int count; |
|
|
1331 | |
|
|
1332 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
1333 | XPUSHs (sv_2mortal (sv)); |
|
|
1334 | |
|
|
1335 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
|
|
1336 | |
|
|
1337 | if (count == 1) |
|
|
1338 | { |
|
|
1339 | sv = newSVsv (POPs); |
|
|
1340 | FREETMPS; LEAVE; |
|
|
1341 | return sv; |
|
|
1342 | } |
|
|
1343 | |
|
|
1344 | SvREFCNT_inc (sv); |
|
|
1345 | FREETMPS; LEAVE; |
|
|
1346 | } |
|
|
1347 | } |
|
|
1348 | |
|
|
1349 | return sv; |
1106 | |
1350 | |
1107 | fail: |
1351 | fail: |
1108 | SvREFCNT_dec (hv); |
1352 | SvREFCNT_dec (hv); |
1109 | DEC_DEC_DEPTH; |
1353 | DEC_DEC_DEPTH; |
1110 | return 0; |
1354 | return 0; |
1111 | } |
1355 | } |
1112 | |
1356 | |
1113 | static SV * |
1357 | static SV * |
1114 | decode_sv (dec_t *dec) |
1358 | decode_sv (dec_t *dec) |
1115 | { |
1359 | { |
1116 | decode_ws (dec); |
|
|
1117 | |
|
|
1118 | // the beauty of JSON: you need exactly one character lookahead |
1360 | // the beauty of JSON: you need exactly one character lookahead |
1119 | // to parse anything. |
1361 | // to parse everything. |
1120 | switch (*dec->cur) |
1362 | switch (*dec->cur) |
1121 | { |
1363 | { |
1122 | case '"': ++dec->cur; return decode_str (dec); |
1364 | case '"': ++dec->cur; return decode_str (dec); |
1123 | case '[': ++dec->cur; return decode_av (dec); |
1365 | case '[': ++dec->cur; return decode_av (dec); |
1124 | case '{': ++dec->cur; return decode_hv (dec); |
1366 | case '{': ++dec->cur; return decode_hv (dec); |
1125 | |
1367 | |
1126 | case '-': |
1368 | case '-': |
1127 | case '0': case '1': case '2': case '3': case '4': |
1369 | case '0': case '1': case '2': case '3': case '4': |
1128 | case '5': case '6': case '7': case '8': case '9': |
1370 | case '5': case '6': case '7': case '8': case '9': |
1129 | return decode_num (dec); |
1371 | return decode_num (dec); |
1130 | |
1372 | |
1131 | case 't': |
1373 | case 't': |
1132 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1374 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1133 | { |
1375 | { |
1134 | dec->cur += 4; |
1376 | dec->cur += 4; |
|
|
1377 | #if JSON_SLOW |
|
|
1378 | json_true = get_bool ("JSON::XS::true"); |
|
|
1379 | #endif |
1135 | return SvREFCNT_inc (json_true); |
1380 | return newSVsv (json_true); |
1136 | } |
1381 | } |
1137 | else |
1382 | else |
1138 | ERR ("'true' expected"); |
1383 | ERR ("'true' expected"); |
1139 | |
1384 | |
1140 | break; |
1385 | break; |
1141 | |
1386 | |
1142 | case 'f': |
1387 | case 'f': |
1143 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1388 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1144 | { |
1389 | { |
1145 | dec->cur += 5; |
1390 | dec->cur += 5; |
|
|
1391 | #if JSON_SLOW |
|
|
1392 | json_false = get_bool ("JSON::XS::false"); |
|
|
1393 | #endif |
1146 | return SvREFCNT_inc (json_false); |
1394 | return newSVsv (json_false); |
1147 | } |
1395 | } |
1148 | else |
1396 | else |
1149 | ERR ("'false' expected"); |
1397 | ERR ("'false' expected"); |
1150 | |
1398 | |
1151 | break; |
1399 | break; |
… | |
… | |
1169 | fail: |
1417 | fail: |
1170 | return 0; |
1418 | return 0; |
1171 | } |
1419 | } |
1172 | |
1420 | |
1173 | static SV * |
1421 | static SV * |
1174 | decode_json (SV *string, struct json *json, UV *offset_return) |
1422 | decode_json (SV *string, JSON *json, char **offset_return) |
1175 | { |
1423 | { |
1176 | dec_t dec; |
1424 | dec_t dec; |
1177 | UV offset; |
|
|
1178 | SV *sv; |
1425 | SV *sv; |
1179 | |
1426 | |
|
|
1427 | /* work around bugs in 5.10 where manipulating magic values |
|
|
1428 | * will perl ignore the magic in subsequent accesses |
|
|
1429 | */ |
1180 | SvGETMAGIC (string); |
1430 | /*SvGETMAGIC (string);*/ |
|
|
1431 | if (SvMAGICAL (string)) |
|
|
1432 | string = sv_2mortal (newSVsv (string)); |
|
|
1433 | |
1181 | SvUPGRADE (string, SVt_PV); |
1434 | SvUPGRADE (string, SVt_PV); |
1182 | |
1435 | |
1183 | if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags)) |
1436 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
1437 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
1438 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
1439 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
1440 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
1441 | * and hope for the best. |
|
|
1442 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
1443 | * assertion business is seriously broken, try yet another workaround |
|
|
1444 | * for the broken -DDEBUGGING. |
|
|
1445 | */ |
|
|
1446 | { |
|
|
1447 | #ifdef DEBUGGING |
|
|
1448 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
1449 | #else |
|
|
1450 | STRLEN offset = SvCUR (string); |
|
|
1451 | #endif |
|
|
1452 | |
|
|
1453 | if (offset > json->max_size && json->max_size) |
1184 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
1454 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
1185 | (unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags)); |
1455 | (unsigned long)SvCUR (string), (unsigned long)json->max_size); |
|
|
1456 | } |
1186 | |
1457 | |
1187 | if (json->flags & F_UTF8) |
1458 | if (json->flags & F_UTF8) |
1188 | sv_utf8_downgrade (string, 0); |
1459 | sv_utf8_downgrade (string, 0); |
1189 | else |
1460 | else |
1190 | sv_utf8_upgrade (string); |
1461 | sv_utf8_upgrade (string); |
1191 | |
1462 | |
1192 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1463 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1193 | |
1464 | |
1194 | dec.json = *json; |
1465 | dec.json = *json; |
1195 | dec.cur = SvPVX (string); |
1466 | dec.cur = SvPVX (string); |
1196 | dec.end = SvEND (string); |
1467 | dec.end = SvEND (string); |
1197 | dec.err = 0; |
1468 | dec.err = 0; |
1198 | dec.depth = 0; |
1469 | dec.depth = 0; |
1199 | dec.maxdepth = DEC_DEPTH (dec.json.flags); |
1470 | |
|
|
1471 | if (dec.json.cb_object || dec.json.cb_sk_object) |
|
|
1472 | dec.json.flags |= F_HOOK; |
1200 | |
1473 | |
1201 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
1474 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1475 | |
|
|
1476 | decode_ws (&dec); |
1202 | sv = decode_sv (&dec); |
1477 | sv = decode_sv (&dec); |
|
|
1478 | |
|
|
1479 | if (offset_return) |
|
|
1480 | *offset_return = dec.cur; |
1203 | |
1481 | |
1204 | if (!(offset_return || !sv)) |
1482 | if (!(offset_return || !sv)) |
1205 | { |
1483 | { |
1206 | // check for trailing garbage |
1484 | // check for trailing garbage |
1207 | decode_ws (&dec); |
1485 | decode_ws (&dec); |
… | |
… | |
1210 | { |
1488 | { |
1211 | dec.err = "garbage after JSON object"; |
1489 | dec.err = "garbage after JSON object"; |
1212 | SvREFCNT_dec (sv); |
1490 | SvREFCNT_dec (sv); |
1213 | sv = 0; |
1491 | sv = 0; |
1214 | } |
1492 | } |
1215 | } |
|
|
1216 | |
|
|
1217 | if (offset_return || !sv) |
|
|
1218 | { |
|
|
1219 | offset = dec.json.flags & F_UTF8 |
|
|
1220 | ? dec.cur - SvPVX (string) |
|
|
1221 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
1222 | |
|
|
1223 | if (offset_return) |
|
|
1224 | *offset_return = offset; |
|
|
1225 | } |
1493 | } |
1226 | |
1494 | |
1227 | if (!sv) |
1495 | if (!sv) |
1228 | { |
1496 | { |
1229 | SV *uni = sv_newmortal (); |
1497 | SV *uni = sv_newmortal (); |
… | |
… | |
1235 | SAVEVPTR (PL_curcop); |
1503 | SAVEVPTR (PL_curcop); |
1236 | PL_curcop = &cop; |
1504 | PL_curcop = &cop; |
1237 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1505 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1238 | LEAVE; |
1506 | LEAVE; |
1239 | |
1507 | |
1240 | croak ("%s, at character offset %d [\"%s\"]", |
1508 | croak ("%s, at character offset %d (before \"%s\")", |
1241 | dec.err, |
1509 | dec.err, |
1242 | (int)offset, |
1510 | ptr_to_index (string, dec.cur), |
1243 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1511 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1244 | } |
1512 | } |
1245 | |
1513 | |
1246 | sv = sv_2mortal (sv); |
1514 | sv = sv_2mortal (sv); |
1247 | |
1515 | |
1248 | if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1516 | if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1249 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1517 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1250 | |
1518 | |
1251 | return sv; |
1519 | return sv; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1523 | // incremental parser |
|
|
1524 | |
|
|
1525 | static void |
|
|
1526 | incr_parse (JSON *self) |
|
|
1527 | { |
|
|
1528 | const char *p = SvPVX (self->incr_text) + self->incr_pos; |
|
|
1529 | |
|
|
1530 | for (;;) |
|
|
1531 | { |
|
|
1532 | //printf ("loop pod %d *p<%c><%s>, mode %d nest %d\n", p - SvPVX (self->incr_text), *p, p, self->incr_mode, self->incr_nest);//D |
|
|
1533 | switch (self->incr_mode) |
|
|
1534 | { |
|
|
1535 | // only used for intiial whitespace skipping |
|
|
1536 | case INCR_M_WS: |
|
|
1537 | for (;;) |
|
|
1538 | { |
|
|
1539 | if (*p > 0x20) |
|
|
1540 | { |
|
|
1541 | self->incr_mode = INCR_M_JSON; |
|
|
1542 | goto incr_m_json; |
|
|
1543 | } |
|
|
1544 | else if (!*p) |
|
|
1545 | goto interrupt; |
|
|
1546 | |
|
|
1547 | ++p; |
|
|
1548 | } |
|
|
1549 | |
|
|
1550 | // skip a single char inside a string (for \\-processing) |
|
|
1551 | case INCR_M_BS: |
|
|
1552 | if (!*p) |
|
|
1553 | goto interrupt; |
|
|
1554 | |
|
|
1555 | ++p; |
|
|
1556 | self->incr_mode = INCR_M_STR; |
|
|
1557 | goto incr_m_str; |
|
|
1558 | |
|
|
1559 | // inside a string |
|
|
1560 | case INCR_M_STR: |
|
|
1561 | incr_m_str: |
|
|
1562 | for (;;) |
|
|
1563 | { |
|
|
1564 | if (*p == '"') |
|
|
1565 | { |
|
|
1566 | ++p; |
|
|
1567 | self->incr_mode = INCR_M_JSON; |
|
|
1568 | |
|
|
1569 | if (!self->incr_nest) |
|
|
1570 | goto interrupt; |
|
|
1571 | |
|
|
1572 | goto incr_m_json; |
|
|
1573 | } |
|
|
1574 | else if (*p == '\\') |
|
|
1575 | { |
|
|
1576 | ++p; // "virtually" consumes character after \ |
|
|
1577 | |
|
|
1578 | if (!*p) // if at end of string we have to switch modes |
|
|
1579 | { |
|
|
1580 | self->incr_mode = INCR_M_BS; |
|
|
1581 | goto interrupt; |
|
|
1582 | } |
|
|
1583 | } |
|
|
1584 | else if (!*p) |
|
|
1585 | goto interrupt; |
|
|
1586 | |
|
|
1587 | ++p; |
|
|
1588 | } |
|
|
1589 | |
|
|
1590 | // after initial ws, outside string |
|
|
1591 | case INCR_M_JSON: |
|
|
1592 | incr_m_json: |
|
|
1593 | for (;;) |
|
|
1594 | { |
|
|
1595 | switch (*p++) |
|
|
1596 | { |
|
|
1597 | case 0: |
|
|
1598 | --p; |
|
|
1599 | goto interrupt; |
|
|
1600 | |
|
|
1601 | case 0x09: |
|
|
1602 | case 0x0a: |
|
|
1603 | case 0x0d: |
|
|
1604 | case 0x20: |
|
|
1605 | if (!self->incr_nest) |
|
|
1606 | { |
|
|
1607 | --p; // do not eat the whitespace, let the next round do it |
|
|
1608 | goto interrupt; |
|
|
1609 | } |
|
|
1610 | break; |
|
|
1611 | |
|
|
1612 | case '"': |
|
|
1613 | self->incr_mode = INCR_M_STR; |
|
|
1614 | goto incr_m_str; |
|
|
1615 | |
|
|
1616 | case '[': |
|
|
1617 | case '{': |
|
|
1618 | if (++self->incr_nest > self->max_depth) |
|
|
1619 | croak (ERR_NESTING_EXCEEDED); |
|
|
1620 | break; |
|
|
1621 | |
|
|
1622 | case ']': |
|
|
1623 | case '}': |
|
|
1624 | if (--self->incr_nest <= 0) |
|
|
1625 | goto interrupt; |
|
|
1626 | } |
|
|
1627 | } |
|
|
1628 | } |
|
|
1629 | |
|
|
1630 | modechange: |
|
|
1631 | ; |
|
|
1632 | } |
|
|
1633 | |
|
|
1634 | interrupt: |
|
|
1635 | self->incr_pos = p - SvPVX (self->incr_text); |
|
|
1636 | //printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D |
1252 | } |
1637 | } |
1253 | |
1638 | |
1254 | ///////////////////////////////////////////////////////////////////////////// |
1639 | ///////////////////////////////////////////////////////////////////////////// |
1255 | // XS interface functions |
1640 | // XS interface functions |
1256 | |
1641 | |
… | |
… | |
1268 | : -1; |
1653 | : -1; |
1269 | |
1654 | |
1270 | json_stash = gv_stashpv ("JSON::XS" , 1); |
1655 | json_stash = gv_stashpv ("JSON::XS" , 1); |
1271 | json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); |
1656 | json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); |
1272 | |
1657 | |
1273 | json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true ); |
1658 | json_true = get_bool ("JSON::XS::true"); |
1274 | json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false); |
1659 | json_false = get_bool ("JSON::XS::false"); |
|
|
1660 | |
|
|
1661 | CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ |
1275 | } |
1662 | } |
1276 | |
1663 | |
1277 | PROTOTYPES: DISABLE |
1664 | PROTOTYPES: DISABLE |
1278 | |
1665 | |
1279 | SV *new (char *dummy) |
1666 | void CLONE (...) |
1280 | CODE: |
1667 | CODE: |
1281 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
1668 | json_stash = 0; |
1282 | OUTPUT: |
1669 | json_boolean_stash = 0; |
1283 | RETVAL |
|
|
1284 | |
1670 | |
|
|
1671 | void new (char *klass) |
|
|
1672 | PPCODE: |
|
|
1673 | { |
|
|
1674 | SV *pv = NEWSV (0, sizeof (JSON)); |
|
|
1675 | SvPOK_only (pv); |
|
|
1676 | json_init ((JSON *)SvPVX (pv)); |
|
|
1677 | XPUSHs (sv_2mortal (sv_bless ( |
|
|
1678 | newRV_noinc (pv), |
|
|
1679 | strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) |
|
|
1680 | ))); |
|
|
1681 | } |
|
|
1682 | |
1285 | SV *ascii (SV *self, int enable = 1) |
1683 | void ascii (JSON *self, int enable = 1) |
1286 | ALIAS: |
1684 | ALIAS: |
1287 | ascii = F_ASCII |
1685 | ascii = F_ASCII |
1288 | latin1 = F_LATIN1 |
1686 | latin1 = F_LATIN1 |
1289 | utf8 = F_UTF8 |
1687 | utf8 = F_UTF8 |
1290 | indent = F_INDENT |
1688 | indent = F_INDENT |
… | |
… | |
1294 | pretty = F_PRETTY |
1692 | pretty = F_PRETTY |
1295 | allow_nonref = F_ALLOW_NONREF |
1693 | allow_nonref = F_ALLOW_NONREF |
1296 | shrink = F_SHRINK |
1694 | shrink = F_SHRINK |
1297 | allow_blessed = F_ALLOW_BLESSED |
1695 | allow_blessed = F_ALLOW_BLESSED |
1298 | convert_blessed = F_CONV_BLESSED |
1696 | convert_blessed = F_CONV_BLESSED |
|
|
1697 | relaxed = F_RELAXED |
|
|
1698 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1699 | PPCODE: |
|
|
1700 | { |
|
|
1701 | if (enable) |
|
|
1702 | self->flags |= ix; |
|
|
1703 | else |
|
|
1704 | self->flags &= ~ix; |
|
|
1705 | |
|
|
1706 | XPUSHs (ST (0)); |
|
|
1707 | } |
|
|
1708 | |
|
|
1709 | void get_ascii (JSON *self) |
|
|
1710 | ALIAS: |
|
|
1711 | get_ascii = F_ASCII |
|
|
1712 | get_latin1 = F_LATIN1 |
|
|
1713 | get_utf8 = F_UTF8 |
|
|
1714 | get_indent = F_INDENT |
|
|
1715 | get_canonical = F_CANONICAL |
|
|
1716 | get_space_before = F_SPACE_BEFORE |
|
|
1717 | get_space_after = F_SPACE_AFTER |
|
|
1718 | get_allow_nonref = F_ALLOW_NONREF |
|
|
1719 | get_shrink = F_SHRINK |
|
|
1720 | get_allow_blessed = F_ALLOW_BLESSED |
|
|
1721 | get_convert_blessed = F_CONV_BLESSED |
|
|
1722 | get_relaxed = F_RELAXED |
|
|
1723 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1724 | PPCODE: |
|
|
1725 | XPUSHs (boolSV (self->flags & ix)); |
|
|
1726 | |
|
|
1727 | void max_depth (JSON *self, U32 max_depth = 0x80000000UL) |
|
|
1728 | PPCODE: |
|
|
1729 | self->max_depth = max_depth; |
|
|
1730 | XPUSHs (ST (0)); |
|
|
1731 | |
|
|
1732 | U32 get_max_depth (JSON *self) |
1299 | CODE: |
1733 | CODE: |
1300 | { |
1734 | RETVAL = self->max_depth; |
1301 | UV *uv = SvJSON (self); |
|
|
1302 | if (enable) |
|
|
1303 | *uv |= ix; |
|
|
1304 | else |
|
|
1305 | *uv &= ~ix; |
|
|
1306 | |
|
|
1307 | RETVAL = newSVsv (self); |
|
|
1308 | } |
|
|
1309 | OUTPUT: |
1735 | OUTPUT: |
1310 | RETVAL |
1736 | RETVAL |
1311 | |
1737 | |
1312 | SV *max_depth (SV *self, UV max_depth = 0x80000000UL) |
1738 | void max_size (JSON *self, U32 max_size = 0) |
|
|
1739 | PPCODE: |
|
|
1740 | self->max_size = max_size; |
|
|
1741 | XPUSHs (ST (0)); |
|
|
1742 | |
|
|
1743 | int get_max_size (JSON *self) |
1313 | CODE: |
1744 | CODE: |
1314 | { |
1745 | RETVAL = self->max_size; |
1315 | UV *uv = SvJSON (self); |
|
|
1316 | UV log2 = 0; |
|
|
1317 | |
|
|
1318 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
|
|
1319 | |
|
|
1320 | while ((1UL << log2) < max_depth) |
|
|
1321 | ++log2; |
|
|
1322 | |
|
|
1323 | *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1324 | |
|
|
1325 | RETVAL = newSVsv (self); |
|
|
1326 | } |
|
|
1327 | OUTPUT: |
1746 | OUTPUT: |
1328 | RETVAL |
1747 | RETVAL |
1329 | |
1748 | |
1330 | SV *max_size (SV *self, UV max_size = 0) |
1749 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
|
|
1750 | PPCODE: |
|
|
1751 | { |
|
|
1752 | SvREFCNT_dec (self->cb_object); |
|
|
1753 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
1754 | |
|
|
1755 | XPUSHs (ST (0)); |
|
|
1756 | } |
|
|
1757 | |
|
|
1758 | void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
1759 | PPCODE: |
|
|
1760 | { |
|
|
1761 | if (!self->cb_sk_object) |
|
|
1762 | self->cb_sk_object = newHV (); |
|
|
1763 | |
|
|
1764 | if (SvOK (cb)) |
|
|
1765 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1766 | else |
|
|
1767 | { |
|
|
1768 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1769 | |
|
|
1770 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1771 | { |
|
|
1772 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1773 | self->cb_sk_object = 0; |
|
|
1774 | } |
|
|
1775 | } |
|
|
1776 | |
|
|
1777 | XPUSHs (ST (0)); |
|
|
1778 | } |
|
|
1779 | |
|
|
1780 | void encode (JSON *self, SV *scalar) |
|
|
1781 | PPCODE: |
|
|
1782 | XPUSHs (encode_json (scalar, self)); |
|
|
1783 | |
|
|
1784 | void decode (JSON *self, SV *jsonstr) |
|
|
1785 | PPCODE: |
|
|
1786 | XPUSHs (decode_json (jsonstr, self, 0)); |
|
|
1787 | |
|
|
1788 | void decode_prefix (JSON *self, SV *jsonstr) |
|
|
1789 | PPCODE: |
|
|
1790 | { |
|
|
1791 | char *offset; |
|
|
1792 | EXTEND (SP, 2); |
|
|
1793 | PUSHs (decode_json (jsonstr, self, &offset)); |
|
|
1794 | PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); |
|
|
1795 | } |
|
|
1796 | |
|
|
1797 | void incr_parse (JSON *self, SV *jsonstr = 0) |
|
|
1798 | PPCODE: |
|
|
1799 | { |
|
|
1800 | if (!self->incr_text) |
|
|
1801 | self->incr_text = newSVpvn ("", 0); |
|
|
1802 | |
|
|
1803 | // append data, if any |
|
|
1804 | if (jsonstr) |
|
|
1805 | { |
|
|
1806 | if (SvUTF8 (jsonstr)) |
|
|
1807 | { |
|
|
1808 | if (!SvUTF8 (self->incr_text)) |
|
|
1809 | { |
|
|
1810 | /* utf-8-ness differs, need to upgrade */ |
|
|
1811 | sv_utf8_upgrade (self->incr_text); |
|
|
1812 | |
|
|
1813 | if (self->incr_pos) |
|
|
1814 | self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos) |
|
|
1815 | - (U8 *)SvPVX (self->incr_text); |
|
|
1816 | } |
|
|
1817 | } |
|
|
1818 | else if (SvUTF8 (self->incr_text)) |
|
|
1819 | sv_utf8_upgrade (jsonstr); |
|
|
1820 | |
|
|
1821 | { |
|
|
1822 | STRLEN len; |
|
|
1823 | const char *str = SvPV (jsonstr, len); |
|
|
1824 | STRLEN cur = SvCUR (self->incr_text); |
|
|
1825 | |
|
|
1826 | if (SvLEN (self->incr_text) <= cur + len) |
|
|
1827 | SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
|
|
1828 | |
|
|
1829 | Move (str, SvEND (self->incr_text), len, char); |
|
|
1830 | SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); |
|
|
1831 | *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1832 | } |
|
|
1833 | } |
|
|
1834 | |
|
|
1835 | if (GIMME_V != G_VOID) |
|
|
1836 | do |
|
|
1837 | { |
|
|
1838 | char *offset; |
|
|
1839 | |
|
|
1840 | if (!INCR_DONE (self)) |
|
|
1841 | { |
|
|
1842 | incr_parse (self); |
|
|
1843 | |
|
|
1844 | if (self->incr_pos > self->max_size && self->max_size) |
|
|
1845 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
1846 | (unsigned long)self->incr_pos, (unsigned long)self->max_size); |
|
|
1847 | |
|
|
1848 | if (!INCR_DONE (self)) |
|
|
1849 | break; |
|
|
1850 | } |
|
|
1851 | |
|
|
1852 | XPUSHs (decode_json (self->incr_text, self, &offset)); |
|
|
1853 | |
|
|
1854 | self->incr_pos -= offset - SvPVX (self->incr_text); |
|
|
1855 | self->incr_nest = 0; |
|
|
1856 | self->incr_mode = 0; |
|
|
1857 | |
|
|
1858 | sv_chop (self->incr_text, offset); |
|
|
1859 | } |
|
|
1860 | while (GIMME_V == G_ARRAY); |
|
|
1861 | } |
|
|
1862 | |
|
|
1863 | SV *incr_text (JSON *self) |
|
|
1864 | ATTRS: lvalue |
1331 | CODE: |
1865 | CODE: |
1332 | { |
1866 | { |
1333 | UV *uv = SvJSON (self); |
1867 | if (self->incr_pos) |
1334 | UV log2 = 0; |
1868 | croak ("incr_text can not be called when the incremental parser already started parsing"); |
1335 | |
1869 | |
1336 | if (max_size > 0x80000000UL) max_size = 0x80000000UL; |
1870 | RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef; |
1337 | if (max_size == 1) max_size = 2; |
|
|
1338 | |
|
|
1339 | while ((1UL << log2) < max_size) |
|
|
1340 | ++log2; |
|
|
1341 | |
|
|
1342 | *uv = *uv & ~F_MAXSIZE | (log2 << S_MAXSIZE); |
|
|
1343 | |
|
|
1344 | RETVAL = newSVsv (self); |
|
|
1345 | } |
1871 | } |
1346 | OUTPUT: |
1872 | OUTPUT: |
1347 | RETVAL |
1873 | RETVAL |
1348 | |
1874 | |
|
|
1875 | void incr_skip (JSON *self) |
|
|
1876 | CODE: |
|
|
1877 | { |
|
|
1878 | if (self->incr_pos) |
|
|
1879 | { |
|
|
1880 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos); |
|
|
1881 | self->incr_pos = 0; |
|
|
1882 | self->incr_nest = 0; |
|
|
1883 | self->incr_mode = 0; |
|
|
1884 | } |
|
|
1885 | } |
|
|
1886 | |
|
|
1887 | void incr_reset (JSON *self) |
|
|
1888 | CODE: |
|
|
1889 | { |
|
|
1890 | SvREFCNT_dec (self->incr_text); |
|
|
1891 | self->incr_text = 0; |
|
|
1892 | self->incr_pos = 0; |
|
|
1893 | self->incr_nest = 0; |
|
|
1894 | self->incr_mode = 0; |
|
|
1895 | } |
|
|
1896 | |
|
|
1897 | void DESTROY (JSON *self) |
|
|
1898 | CODE: |
|
|
1899 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1900 | SvREFCNT_dec (self->cb_object); |
|
|
1901 | SvREFCNT_dec (self->incr_text); |
|
|
1902 | |
|
|
1903 | PROTOTYPES: ENABLE |
|
|
1904 | |
1349 | void encode (SV *self, SV *scalar) |
1905 | void encode_json (SV *scalar) |
|
|
1906 | ALIAS: |
|
|
1907 | to_json_ = 0 |
|
|
1908 | encode_json = F_UTF8 |
1350 | PPCODE: |
1909 | PPCODE: |
1351 | { |
1910 | { |
1352 | struct json json = { *SvJSON (self) }; |
1911 | JSON json; |
|
|
1912 | json_init (&json); |
|
|
1913 | json.flags |= ix; |
1353 | XPUSHs (encode_json (scalar, &json)); |
1914 | XPUSHs (encode_json (scalar, &json)); |
1354 | } |
1915 | } |
1355 | |
1916 | |
1356 | void decode (SV *self, SV *jsonstr) |
1917 | void decode_json (SV *jsonstr) |
|
|
1918 | ALIAS: |
|
|
1919 | from_json_ = 0 |
|
|
1920 | decode_json = F_UTF8 |
1357 | PPCODE: |
1921 | PPCODE: |
1358 | { |
1922 | { |
1359 | struct json json = { *SvJSON (self) }; |
1923 | JSON json; |
|
|
1924 | json_init (&json); |
|
|
1925 | json.flags |= ix; |
1360 | XPUSHs (decode_json (jsonstr, &json, 0)); |
1926 | XPUSHs (decode_json (jsonstr, &json, 0)); |
1361 | } |
1927 | } |
1362 | |
1928 | |
1363 | void decode_prefix (SV *self, SV *jsonstr) |
|
|
1364 | PPCODE: |
|
|
1365 | { |
|
|
1366 | UV offset; |
|
|
1367 | struct json json = { *SvJSON (self) }; |
|
|
1368 | EXTEND (SP, 2); |
|
|
1369 | PUSHs (decode_json (jsonstr, &json, &offset)); |
|
|
1370 | PUSHs (sv_2mortal (newSVuv (offset))); |
|
|
1371 | } |
|
|
1372 | |
1929 | |
1373 | PROTOTYPES: ENABLE |
|
|
1374 | |
|
|
1375 | void to_json (SV *scalar) |
|
|
1376 | PPCODE: |
|
|
1377 | { |
|
|
1378 | struct json json = { F_DEFAULT | F_UTF8 }; |
|
|
1379 | XPUSHs (encode_json (scalar, &json)); |
|
|
1380 | } |
|
|
1381 | |
|
|
1382 | void from_json (SV *jsonstr) |
|
|
1383 | PPCODE: |
|
|
1384 | { |
|
|
1385 | struct json json = { F_DEFAULT | F_UTF8 }; |
|
|
1386 | XPUSHs (decode_json (jsonstr, &json, 0)); |
|
|
1387 | } |
|
|
1388 | |
|
|