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> |
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11 | #include <inttypes.h> |
9 | |
12 | |
10 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
13 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
11 | # define snprintf _snprintf // C compilers have this in stdio.h |
14 | # define snprintf _snprintf // C compilers have this in stdio.h |
12 | #endif |
15 | #endif |
13 | |
16 | |
14 | // some old perls do not have this, try to make it work, no |
17 | // 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. |
18 | // guarantees, though. if it breaks, you get to keep the pieces. |
16 | #ifndef UTF8_MAXBYTES |
19 | #ifndef UTF8_MAXBYTES |
17 | # define UTF8_MAXBYTES 13 |
20 | # define UTF8_MAXBYTES 13 |
18 | #endif |
21 | #endif |
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22 | |
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23 | // compatibility with perl <5.18 |
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24 | #ifndef HvNAMELEN_get |
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25 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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26 | #endif |
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27 | #ifndef HvNAMELEN |
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28 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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29 | #endif |
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30 | #ifndef HvNAMEUTF8 |
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31 | # define HvNAMEUTF8(hv) 0 |
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32 | #endif |
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33 | |
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34 | // three extra for rounding, sign, and end of string |
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35 | #define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3) |
19 | |
36 | |
20 | #define F_ASCII 0x00000001UL |
37 | #define F_ASCII 0x00000001UL |
21 | #define F_LATIN1 0x00000002UL |
38 | #define F_LATIN1 0x00000002UL |
22 | #define F_UTF8 0x00000004UL |
39 | #define F_UTF8 0x00000004UL |
23 | #define F_INDENT 0x00000008UL |
40 | #define F_INDENT 0x00000008UL |
… | |
… | |
26 | #define F_SPACE_AFTER 0x00000040UL |
43 | #define F_SPACE_AFTER 0x00000040UL |
27 | #define F_ALLOW_NONREF 0x00000100UL |
44 | #define F_ALLOW_NONREF 0x00000100UL |
28 | #define F_SHRINK 0x00000200UL |
45 | #define F_SHRINK 0x00000200UL |
29 | #define F_ALLOW_BLESSED 0x00000400UL |
46 | #define F_ALLOW_BLESSED 0x00000400UL |
30 | #define F_CONV_BLESSED 0x00000800UL |
47 | #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 |
48 | #define F_RELAXED 0x00001000UL |
34 | #define S_MAXSIZE 20 |
49 | #define F_ALLOW_UNKNOWN 0x00002000UL |
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50 | #define F_ALLOW_TAGS 0x00004000UL |
35 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
51 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
36 | |
52 | |
37 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
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38 | #define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE )) |
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39 | |
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40 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
53 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
41 | #define F_DEFAULT (9UL << S_MAXDEPTH) |
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42 | |
54 | |
43 | #define INIT_SIZE 32 // initial scalar size to be allocated |
55 | #define INIT_SIZE 32 // initial scalar size to be allocated |
44 | #define INDENT_STEP 3 // spaces per indentation level |
56 | #define INDENT_STEP 3 // spaces per indentation level |
45 | |
57 | |
46 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
58 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
47 | |
59 | |
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60 | #define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8) |
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61 | |
48 | #define SB do { |
62 | #define SB do { |
49 | #define SE } while (0) |
63 | #define SE } while (0) |
50 | |
64 | |
51 | #if __GNUC__ >= 3 |
65 | #if __GNUC__ >= 3 |
52 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
66 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
53 | # define inline inline |
67 | # define INLINE static inline |
54 | #else |
68 | #else |
55 | # define expect(expr,value) (expr) |
69 | # define expect(expr,value) (expr) |
56 | # define inline static |
70 | # define INLINE static |
57 | #endif |
71 | #endif |
58 | |
72 | |
59 | #define expect_false(expr) expect ((expr) != 0, 0) |
73 | #define expect_false(expr) expect ((expr) != 0, 0) |
60 | #define expect_true(expr) expect ((expr) != 0, 1) |
74 | #define expect_true(expr) expect ((expr) != 0, 1) |
61 | |
75 | |
62 | static HV *json_stash, *json_boolean_stash; // JSON::XS:: |
76 | #define IN_RANGE_INC(type,val,beg,end) \ |
63 | static SV *json_true, *json_false; |
77 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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78 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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79 | |
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80 | #define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
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81 | |
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82 | #ifdef USE_ITHREADS |
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83 | # define JSON_SLOW 1 |
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84 | # define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) |
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85 | # define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1)) |
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86 | #else |
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87 | # define JSON_SLOW 0 |
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88 | # define JSON_STASH json_stash |
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89 | # define BOOL_STASH bool_stash |
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90 | #endif |
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91 | |
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92 | // the amount of HEs to allocate on the stack, when sorting keys |
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93 | #define STACK_HES 64 |
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94 | |
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95 | static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean:: |
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96 | static SV *bool_true, *bool_false, *sv_json; |
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97 | |
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98 | enum { |
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99 | INCR_M_WS = 0, // initial whitespace skipping, must be 0 |
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100 | INCR_M_STR, // inside string |
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101 | INCR_M_BS, // inside backslash |
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102 | INCR_M_C0, // inside comment in initial whitespace sequence |
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103 | INCR_M_C1, // inside comment in other places |
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104 | INCR_M_JSON // outside anything, count nesting |
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105 | }; |
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106 | |
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107 | #define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON) |
64 | |
108 | |
65 | typedef struct { |
109 | typedef struct { |
66 | U32 flags; |
110 | U32 flags; |
67 | SV *cb_object, *cb_sk_object; |
111 | U32 max_depth; |
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112 | STRLEN max_size; |
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113 | |
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114 | SV *cb_object; |
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115 | HV *cb_sk_object; |
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116 | |
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117 | // for the incremental parser |
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118 | SV *incr_text; // the source text so far |
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119 | STRLEN incr_pos; // the current offset into the text |
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120 | int incr_nest; // {[]}-nesting level |
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121 | unsigned char incr_mode; |
68 | } JSON; |
122 | } JSON; |
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123 | |
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124 | INLINE void |
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125 | json_init (JSON *json) |
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126 | { |
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127 | Zero (json, 1, JSON); |
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128 | json->max_depth = 512; |
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129 | } |
69 | |
130 | |
70 | ///////////////////////////////////////////////////////////////////////////// |
131 | ///////////////////////////////////////////////////////////////////////////// |
71 | // utility functions |
132 | // utility functions |
72 | |
133 | |
73 | inline void |
134 | INLINE SV * |
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135 | get_bool (const char *name) |
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136 | { |
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137 | SV *sv = get_sv (name, 1); |
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138 | |
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139 | SvREADONLY_on (sv); |
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140 | SvREADONLY_on (SvRV (sv)); |
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141 | |
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142 | return sv; |
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143 | } |
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144 | |
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145 | INLINE void |
74 | shrink (SV *sv) |
146 | shrink (SV *sv) |
75 | { |
147 | { |
76 | sv_utf8_downgrade (sv, 1); |
148 | sv_utf8_downgrade (sv, 1); |
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149 | |
77 | if (SvLEN (sv) > SvCUR (sv) + 1) |
150 | if (SvLEN (sv) > SvCUR (sv) + 1) |
78 | { |
151 | { |
79 | #ifdef SvPV_shrink_to_cur |
152 | #ifdef SvPV_shrink_to_cur |
80 | SvPV_shrink_to_cur (sv); |
153 | SvPV_shrink_to_cur (sv); |
81 | #elif defined (SvPV_renew) |
154 | #elif defined (SvPV_renew) |
82 | SvPV_renew (sv, SvCUR (sv) + 1); |
155 | SvPV_renew (sv, SvCUR (sv) + 1); |
83 | #endif |
156 | #endif |
84 | } |
157 | } |
85 | } |
158 | } |
86 | |
159 | |
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160 | /* adds two STRLENs together, slow, and with paranoia */ |
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161 | STRLEN |
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162 | strlen_sum (STRLEN l1, STRLEN l2) |
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163 | { |
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164 | size_t sum = l1 + l2; |
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165 | |
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166 | if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum) |
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167 | croak ("JSON::XS: string size overflow"); |
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168 | |
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169 | return sum; |
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170 | } |
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171 | |
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172 | /* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */ |
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173 | static char * |
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174 | json_sv_grow (SV *sv, size_t len1, size_t len2) |
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175 | { |
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176 | len1 = strlen_sum (len1, len2); |
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177 | len1 = strlen_sum (len1, len1 >> 1); |
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178 | |
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179 | if (len1 > 4096 - 24) |
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180 | len1 = (len1 | 4095) - 24; |
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181 | |
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182 | return SvGROW (sv, len1); |
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183 | } |
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184 | |
87 | // decode an utf-8 character and return it, or (UV)-1 in |
185 | // decode an utf-8 character and return it, or (UV)-1 in |
88 | // case of an error. |
186 | // case of an error. |
89 | // we special-case "safe" characters from U+80 .. U+7FF, |
187 | // we special-case "safe" characters from U+80 .. U+7FF, |
90 | // but use the very good perl function to parse anything else. |
188 | // but use the very good perl function to parse anything else. |
91 | // note that we never call this function for a ascii codepoints |
189 | // note that we never call this function for a ascii codepoints |
92 | inline UV |
190 | INLINE UV |
93 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
191 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
94 | { |
192 | { |
95 | if (expect_false (s[0] > 0xdf || s[0] < 0xc2)) |
193 | if (expect_true (len >= 2 |
96 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
194 | && IN_RANGE_INC (char, s[0], 0xc2, 0xdf) |
97 | else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) |
195 | && IN_RANGE_INC (char, s[1], 0x80, 0xbf))) |
98 | { |
196 | { |
99 | *clen = 2; |
197 | *clen = 2; |
100 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
198 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
101 | } |
199 | } |
102 | else |
200 | else |
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201 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
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202 | } |
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203 | |
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204 | // likewise for encoding, also never called for ascii codepoints |
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205 | // this function takes advantage of this fact, although current gccs |
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206 | // seem to optimise the check for >= 0x80 away anyways |
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207 | INLINE unsigned char * |
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208 | encode_utf8 (unsigned char *s, UV ch) |
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209 | { |
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210 | if (expect_false (ch < 0x000080)) |
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211 | *s++ = ch; |
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212 | else if (expect_true (ch < 0x000800)) |
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213 | *s++ = 0xc0 | ( ch >> 6), |
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214 | *s++ = 0x80 | ( ch & 0x3f); |
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215 | else if ( ch < 0x010000) |
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216 | *s++ = 0xe0 | ( ch >> 12), |
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217 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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218 | *s++ = 0x80 | ( ch & 0x3f); |
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219 | else if ( ch < 0x110000) |
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220 | *s++ = 0xf0 | ( ch >> 18), |
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221 | *s++ = 0x80 | ((ch >> 12) & 0x3f), |
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222 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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223 | *s++ = 0x80 | ( ch & 0x3f); |
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224 | |
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225 | return s; |
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226 | } |
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227 | |
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228 | // convert offset pointer to character index, sv must be string |
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229 | static STRLEN |
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230 | ptr_to_index (SV *sv, char *offset) |
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231 | { |
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232 | return SvUTF8 (sv) |
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233 | ? utf8_distance (offset, SvPVX (sv)) |
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234 | : offset - SvPVX (sv); |
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235 | } |
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236 | |
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237 | ///////////////////////////////////////////////////////////////////////////// |
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238 | // fp hell |
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239 | |
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240 | // scan a group of digits, and a trailing exponent |
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241 | static void |
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242 | json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp, int maxdepth) |
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243 | { |
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244 | UV uaccum = 0; |
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245 | int eaccum = 0; |
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246 | |
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247 | // if we recurse too deep, skip all remaining digits |
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248 | // to avoid a stack overflow attack |
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249 | if (expect_false (--maxdepth <= 0)) |
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250 | while (((U8)*s - '0') < 10) |
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251 | ++s; |
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252 | |
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253 | for (;;) |
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254 | { |
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255 | U8 dig = (U8)*s - '0'; |
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256 | |
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257 | if (expect_false (dig >= 10)) |
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258 | { |
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259 | if (dig == (U8)((U8)'.' - (U8)'0')) |
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260 | { |
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261 | ++s; |
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262 | json_atof_scan1 (s, accum, expo, 1, maxdepth); |
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263 | } |
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264 | else if ((dig | ' ') == 'e' - '0') |
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265 | { |
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266 | int exp2 = 0; |
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267 | int neg = 0; |
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268 | |
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269 | ++s; |
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270 | |
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271 | if (*s == '-') |
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272 | { |
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273 | ++s; |
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274 | neg = 1; |
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275 | } |
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276 | else if (*s == '+') |
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277 | ++s; |
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278 | |
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279 | while ((dig = (U8)*s - '0') < 10) |
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280 | exp2 = exp2 * 10 + *s++ - '0'; |
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281 | |
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282 | *expo += neg ? -exp2 : exp2; |
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283 | } |
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284 | |
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285 | break; |
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286 | } |
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287 | |
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288 | ++s; |
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289 | |
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290 | uaccum = uaccum * 10 + dig; |
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291 | ++eaccum; |
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292 | |
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293 | // if we have too many digits, then recurse for more |
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294 | // we actually do this for rather few digits |
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295 | if (uaccum >= (UV_MAX - 9) / 10) |
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296 | { |
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297 | if (postdp) *expo -= eaccum; |
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298 | json_atof_scan1 (s, accum, expo, postdp, maxdepth); |
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299 | if (postdp) *expo += eaccum; |
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300 | |
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301 | break; |
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302 | } |
103 | { |
303 | } |
104 | *clen = (STRLEN)-1; |
304 | |
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305 | // this relies greatly on the quality of the pow () |
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306 | // implementation of the platform, but a good |
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307 | // implementation is hard to beat. |
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308 | // (IEEE 754 conformant ones are required to be exact) |
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309 | if (postdp) *expo -= eaccum; |
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310 | *accum += uaccum * Perl_pow (10., *expo); |
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311 | *expo += eaccum; |
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312 | } |
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313 | |
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314 | static NV |
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315 | json_atof (const char *s) |
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316 | { |
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317 | NV accum = 0.; |
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318 | int expo = 0; |
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319 | int neg = 0; |
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320 | |
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321 | if (*s == '-') |
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322 | { |
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323 | ++s; |
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324 | neg = 1; |
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325 | } |
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326 | |
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327 | // a recursion depth of ten gives us >>500 bits |
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328 | json_atof_scan1 (s, &accum, &expo, 0, 10); |
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329 | |
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330 | return neg ? -accum : accum; |
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331 | } |
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332 | |
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333 | // target of scalar reference is bool? -1 == nope, 0 == false, 1 == true |
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334 | static int |
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335 | ref_bool_type (SV *sv) |
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336 | { |
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337 | svtype svt = SvTYPE (sv); |
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338 | |
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339 | if (svt < SVt_PVAV) |
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340 | { |
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341 | STRLEN len = 0; |
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342 | char *pv = svt ? SvPV (sv, len) : 0; |
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343 | |
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344 | if (len == 1) |
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345 | if (*pv == '1') |
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346 | return 1; |
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347 | else if (*pv == '0') |
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348 | return 0; |
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349 | } |
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350 | |
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351 | return -1; |
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352 | } |
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353 | |
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354 | // returns whether scalar is not a reference in the sense of allow_nonref |
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355 | static int |
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356 | json_nonref (SV *scalar) |
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357 | { |
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358 | if (!SvROK (scalar)) |
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359 | return 1; |
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360 | |
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361 | scalar = SvRV (scalar); |
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362 | |
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363 | if (SvTYPE (scalar) >= SVt_PVMG) |
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364 | { |
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365 | if (SvSTASH (scalar) == bool_stash) |
105 | return (UV)-1; |
366 | return 1; |
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367 | |
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368 | if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0) |
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369 | return 1; |
106 | } |
370 | } |
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371 | |
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372 | return 0; |
107 | } |
373 | } |
108 | |
374 | |
109 | ///////////////////////////////////////////////////////////////////////////// |
375 | ///////////////////////////////////////////////////////////////////////////// |
110 | // encoder |
376 | // encoder |
111 | |
377 | |
… | |
… | |
115 | char *cur; // SvPVX (sv) + current output position |
381 | char *cur; // SvPVX (sv) + current output position |
116 | char *end; // SvEND (sv) |
382 | char *end; // SvEND (sv) |
117 | SV *sv; // result scalar |
383 | SV *sv; // result scalar |
118 | JSON json; |
384 | JSON json; |
119 | U32 indent; // indentation level |
385 | U32 indent; // indentation level |
120 | U32 maxdepth; // max. indentation/recursion level |
386 | UV limit; // escape character values >= this value when encoding |
121 | } enc_t; |
387 | } enc_t; |
122 | |
388 | |
123 | inline void |
389 | INLINE void |
124 | need (enc_t *enc, STRLEN len) |
390 | need (enc_t *enc, STRLEN len) |
125 | { |
391 | { |
126 | if (expect_false (enc->cur + len >= enc->end)) |
392 | if (expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
127 | { |
393 | { |
128 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
394 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
129 | SvGROW (enc->sv, cur + len + 1); |
395 | char *buf = json_sv_grow (enc->sv, cur, len); |
130 | enc->cur = SvPVX (enc->sv) + cur; |
396 | enc->cur = buf + cur; |
131 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
397 | enc->end = buf + SvLEN (enc->sv) - 1; |
132 | } |
398 | } |
133 | } |
399 | } |
134 | |
400 | |
135 | inline void |
401 | INLINE void |
136 | encode_ch (enc_t *enc, char ch) |
402 | encode_ch (enc_t *enc, char ch) |
137 | { |
403 | { |
138 | need (enc, 1); |
404 | need (enc, 1); |
139 | *enc->cur++ = ch; |
405 | *enc->cur++ = ch; |
140 | } |
406 | } |
… | |
… | |
152 | |
418 | |
153 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
419 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
154 | { |
420 | { |
155 | if (expect_false (ch == '"')) // but with slow exceptions |
421 | if (expect_false (ch == '"')) // but with slow exceptions |
156 | { |
422 | { |
157 | need (enc, len += 1); |
423 | need (enc, len + 1); |
158 | *enc->cur++ = '\\'; |
424 | *enc->cur++ = '\\'; |
159 | *enc->cur++ = '"'; |
425 | *enc->cur++ = '"'; |
160 | } |
426 | } |
161 | else if (expect_false (ch == '\\')) |
427 | else if (expect_false (ch == '\\')) |
162 | { |
428 | { |
163 | need (enc, len += 1); |
429 | need (enc, len + 1); |
164 | *enc->cur++ = '\\'; |
430 | *enc->cur++ = '\\'; |
165 | *enc->cur++ = '\\'; |
431 | *enc->cur++ = '\\'; |
166 | } |
432 | } |
167 | else |
433 | else |
168 | *enc->cur++ = ch; |
434 | *enc->cur++ = ch; |
… | |
… | |
171 | } |
437 | } |
172 | else |
438 | else |
173 | { |
439 | { |
174 | switch (ch) |
440 | switch (ch) |
175 | { |
441 | { |
176 | case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
442 | case '\010': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
177 | case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
443 | case '\011': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
178 | case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
444 | case '\012': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
179 | case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
445 | case '\014': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
180 | case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
446 | case '\015': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
181 | |
447 | |
182 | default: |
448 | default: |
183 | { |
449 | { |
184 | STRLEN clen; |
450 | STRLEN clen; |
185 | UV uch; |
451 | UV uch; |
… | |
… | |
194 | { |
460 | { |
195 | uch = ch; |
461 | uch = ch; |
196 | clen = 1; |
462 | clen = 1; |
197 | } |
463 | } |
198 | |
464 | |
199 | if (uch > 0x10FFFFUL) |
465 | if (uch < 0x80/*0x20*/ || uch >= enc->limit) |
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 | { |
466 | { |
204 | if (uch > 0xFFFFUL) |
467 | if (uch >= 0x10000UL) |
205 | { |
468 | { |
|
|
469 | if (uch >= 0x110000UL) |
|
|
470 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
471 | |
206 | need (enc, len += 11); |
472 | need (enc, len + 11); |
207 | sprintf (enc->cur, "\\u%04x\\u%04x", |
473 | sprintf (enc->cur, "\\u%04x\\u%04x", |
208 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
474 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
209 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
475 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
210 | enc->cur += 12; |
476 | enc->cur += 12; |
211 | } |
477 | } |
212 | else |
478 | else |
213 | { |
479 | { |
214 | static char hexdigit [16] = "0123456789abcdef"; |
|
|
215 | need (enc, len += 5); |
480 | need (enc, len + 5); |
216 | *enc->cur++ = '\\'; |
481 | *enc->cur++ = '\\'; |
217 | *enc->cur++ = 'u'; |
482 | *enc->cur++ = 'u'; |
218 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
483 | *enc->cur++ = PL_hexdigit [ uch >> 12 ]; |
219 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
484 | *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; |
220 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
485 | *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; |
221 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
486 | *enc->cur++ = PL_hexdigit [(uch >> 0) & 15]; |
222 | } |
487 | } |
223 | |
488 | |
224 | str += clen; |
489 | str += clen; |
225 | } |
490 | } |
226 | else if (enc->json.flags & F_LATIN1) |
491 | else if (enc->json.flags & F_LATIN1) |
… | |
… | |
228 | *enc->cur++ = uch; |
493 | *enc->cur++ = uch; |
229 | str += clen; |
494 | str += clen; |
230 | } |
495 | } |
231 | else if (is_utf8) |
496 | else if (is_utf8) |
232 | { |
497 | { |
233 | need (enc, len += clen); |
498 | need (enc, len + clen); |
234 | do |
499 | do |
235 | { |
500 | { |
236 | *enc->cur++ = *str++; |
501 | *enc->cur++ = *str++; |
237 | } |
502 | } |
238 | while (--clen); |
503 | while (--clen); |
239 | } |
504 | } |
240 | else |
505 | else |
241 | { |
506 | { |
242 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
507 | need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
243 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
508 | enc->cur = encode_utf8 (enc->cur, uch); |
244 | ++str; |
509 | ++str; |
245 | } |
510 | } |
246 | } |
511 | } |
247 | } |
512 | } |
248 | } |
513 | } |
249 | |
514 | |
250 | --len; |
515 | --len; |
251 | } |
516 | } |
252 | } |
517 | } |
253 | |
518 | |
254 | inline void |
519 | INLINE void |
255 | encode_indent (enc_t *enc) |
520 | encode_indent (enc_t *enc) |
256 | { |
521 | { |
257 | if (enc->json.flags & F_INDENT) |
522 | if (enc->json.flags & F_INDENT) |
258 | { |
523 | { |
259 | int spaces = enc->indent * INDENT_STEP; |
524 | int spaces = enc->indent * INDENT_STEP; |
… | |
… | |
262 | memset (enc->cur, ' ', spaces); |
527 | memset (enc->cur, ' ', spaces); |
263 | enc->cur += spaces; |
528 | enc->cur += spaces; |
264 | } |
529 | } |
265 | } |
530 | } |
266 | |
531 | |
267 | inline void |
532 | INLINE void |
268 | encode_space (enc_t *enc) |
533 | encode_space (enc_t *enc) |
269 | { |
534 | { |
270 | need (enc, 1); |
535 | need (enc, 1); |
271 | encode_ch (enc, ' '); |
536 | encode_ch (enc, ' '); |
272 | } |
537 | } |
273 | |
538 | |
274 | inline void |
539 | INLINE void |
275 | encode_nl (enc_t *enc) |
540 | encode_nl (enc_t *enc) |
276 | { |
541 | { |
277 | if (enc->json.flags & F_INDENT) |
542 | if (enc->json.flags & F_INDENT) |
278 | { |
543 | { |
279 | need (enc, 1); |
544 | need (enc, 1); |
280 | encode_ch (enc, '\n'); |
545 | encode_ch (enc, '\n'); |
281 | } |
546 | } |
282 | } |
547 | } |
283 | |
548 | |
284 | inline void |
549 | INLINE void |
285 | encode_comma (enc_t *enc) |
550 | encode_comma (enc_t *enc) |
286 | { |
551 | { |
287 | encode_ch (enc, ','); |
552 | encode_ch (enc, ','); |
288 | |
553 | |
289 | if (enc->json.flags & F_INDENT) |
554 | if (enc->json.flags & F_INDENT) |
… | |
… | |
297 | static void |
562 | static void |
298 | encode_av (enc_t *enc, AV *av) |
563 | encode_av (enc_t *enc, AV *av) |
299 | { |
564 | { |
300 | int i, len = av_len (av); |
565 | int i, len = av_len (av); |
301 | |
566 | |
302 | if (enc->indent >= enc->maxdepth) |
567 | if (enc->indent >= enc->json.max_depth) |
303 | croak ("data structure too deep (hit recursion limit)"); |
568 | croak (ERR_NESTING_EXCEEDED); |
304 | |
569 | |
305 | encode_ch (enc, '['); encode_nl (enc); |
570 | encode_ch (enc, '['); |
306 | ++enc->indent; |
|
|
307 | |
571 | |
|
|
572 | if (len >= 0) |
|
|
573 | { |
|
|
574 | encode_nl (enc); ++enc->indent; |
|
|
575 | |
308 | for (i = 0; i <= len; ++i) |
576 | for (i = 0; i <= len; ++i) |
309 | { |
577 | { |
|
|
578 | SV **svp = av_fetch (av, i, 0); |
|
|
579 | |
310 | encode_indent (enc); |
580 | encode_indent (enc); |
311 | encode_sv (enc, *av_fetch (av, i, 0)); |
|
|
312 | |
581 | |
|
|
582 | if (svp) |
|
|
583 | encode_sv (enc, *svp); |
|
|
584 | else |
|
|
585 | encode_str (enc, "null", 4, 0); |
|
|
586 | |
313 | if (i < len) |
587 | if (i < len) |
314 | encode_comma (enc); |
588 | encode_comma (enc); |
315 | } |
589 | } |
316 | |
590 | |
|
|
591 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
592 | } |
|
|
593 | |
317 | encode_nl (enc); |
594 | encode_ch (enc, ']'); |
318 | |
|
|
319 | --enc->indent; |
|
|
320 | encode_indent (enc); encode_ch (enc, ']'); |
|
|
321 | } |
595 | } |
322 | |
596 | |
323 | static void |
597 | static void |
324 | encode_he (enc_t *enc, HE *he) |
598 | encode_hk (enc_t *enc, HE *he) |
325 | { |
599 | { |
326 | encode_ch (enc, '"'); |
600 | encode_ch (enc, '"'); |
327 | |
601 | |
328 | if (HeKLEN (he) == HEf_SVKEY) |
602 | if (HeKLEN (he) == HEf_SVKEY) |
329 | { |
603 | { |
330 | SV *sv = HeSVKEY (he); |
604 | SV *sv = HeSVKEY (he); |
331 | STRLEN len; |
605 | STRLEN len; |
332 | char *str; |
606 | char *str; |
333 | |
607 | |
334 | SvGETMAGIC (sv); |
608 | SvGETMAGIC (sv); |
335 | str = SvPV (sv, len); |
609 | str = SvPV (sv, len); |
336 | |
610 | |
337 | encode_str (enc, str, len, SvUTF8 (sv)); |
611 | encode_str (enc, str, len, SvUTF8 (sv)); |
338 | } |
612 | } |
… | |
… | |
342 | encode_ch (enc, '"'); |
616 | encode_ch (enc, '"'); |
343 | |
617 | |
344 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
618 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
345 | encode_ch (enc, ':'); |
619 | encode_ch (enc, ':'); |
346 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
620 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
347 | encode_sv (enc, HeVAL (he)); |
|
|
348 | } |
621 | } |
349 | |
622 | |
350 | // compare hash entries, used when all keys are bytestrings |
623 | // compare hash entries, used when all keys are bytestrings |
351 | static int |
624 | static int |
352 | he_cmp_fast (const void *a_, const void *b_) |
625 | he_cmp_fast (const void *a_, const void *b_) |
… | |
… | |
357 | HE *b = *(HE **)b_; |
630 | HE *b = *(HE **)b_; |
358 | |
631 | |
359 | STRLEN la = HeKLEN (a); |
632 | STRLEN la = HeKLEN (a); |
360 | STRLEN lb = HeKLEN (b); |
633 | STRLEN lb = HeKLEN (b); |
361 | |
634 | |
362 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
635 | if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la))) |
363 | cmp = la - lb; |
636 | cmp = lb - la; |
364 | |
637 | |
365 | return cmp; |
638 | return cmp; |
366 | } |
639 | } |
367 | |
640 | |
368 | // compare hash entries, used when some keys are sv's or utf-x |
641 | // compare hash entries, used when some keys are sv's or utf-x |
369 | static int |
642 | static int |
370 | he_cmp_slow (const void *a, const void *b) |
643 | he_cmp_slow (const void *a, const void *b) |
371 | { |
644 | { |
372 | return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
645 | return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a)); |
373 | } |
646 | } |
374 | |
647 | |
375 | static void |
648 | static void |
376 | encode_hv (enc_t *enc, HV *hv) |
649 | encode_hv (enc_t *enc, HV *hv) |
377 | { |
650 | { |
378 | int count, i; |
651 | HE *he; |
379 | |
652 | |
380 | if (enc->indent >= enc->maxdepth) |
653 | if (enc->indent >= enc->json.max_depth) |
381 | croak ("data structure too deep (hit recursion limit)"); |
654 | croak (ERR_NESTING_EXCEEDED); |
382 | |
655 | |
383 | encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
656 | encode_ch (enc, '{'); |
384 | |
657 | |
385 | if ((count = hv_iterinit (hv))) |
|
|
386 | { |
|
|
387 | // for canonical output we have to sort by keys first |
658 | // for canonical output we have to sort by keys first |
388 | // actually, this is mostly due to the stupid so-called |
659 | // actually, this is mostly due to the stupid so-called |
389 | // security workaround added somewhere in 5.8.x. |
660 | // security workaround added somewhere in 5.8.x |
390 | // that randomises hash orderings |
661 | // that randomises hash orderings |
391 | if (enc->json.flags & F_CANONICAL) |
662 | if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv)) |
|
|
663 | { |
|
|
664 | int count = hv_iterinit (hv); |
|
|
665 | |
|
|
666 | if (SvMAGICAL (hv)) |
392 | { |
667 | { |
|
|
668 | // need to count by iterating. could improve by dynamically building the vector below |
|
|
669 | // but I don't care for the speed of this special case. |
|
|
670 | // note also that we will run into undefined behaviour when the two iterations |
|
|
671 | // do not result in the same count, something I might care for in some later release. |
|
|
672 | |
|
|
673 | count = 0; |
|
|
674 | while (hv_iternext (hv)) |
|
|
675 | ++count; |
|
|
676 | |
|
|
677 | hv_iterinit (hv); |
|
|
678 | } |
|
|
679 | |
|
|
680 | if (count) |
|
|
681 | { |
393 | int fast = 1; |
682 | int i, fast = 1; |
394 | HE *he; |
683 | HE *hes_stack [STACK_HES]; |
395 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
684 | HE **hes = hes_stack; |
396 | HE **hes = _alloca (count * sizeof (HE)); |
685 | |
397 | #else |
686 | // allocate larger arrays on the heap |
398 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
687 | if (count > STACK_HES) |
399 | #endif |
688 | { |
|
|
689 | SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes))); |
|
|
690 | hes = (HE **)SvPVX (sv); |
|
|
691 | } |
400 | |
692 | |
401 | i = 0; |
693 | i = 0; |
402 | while ((he = hv_iternext (hv))) |
694 | while ((he = hv_iternext (hv))) |
403 | { |
695 | { |
404 | hes [i++] = he; |
696 | hes [i++] = he; |
… | |
… | |
426 | |
718 | |
427 | FREETMPS; |
719 | FREETMPS; |
428 | LEAVE; |
720 | LEAVE; |
429 | } |
721 | } |
430 | |
722 | |
431 | for (i = 0; i < count; ++i) |
723 | encode_nl (enc); ++enc->indent; |
|
|
724 | |
|
|
725 | while (count--) |
432 | { |
726 | { |
433 | encode_indent (enc); |
727 | encode_indent (enc); |
|
|
728 | he = hes [count]; |
434 | encode_he (enc, hes [i]); |
729 | encode_hk (enc, he); |
|
|
730 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
435 | |
731 | |
436 | if (i < count - 1) |
732 | if (count) |
437 | encode_comma (enc); |
733 | encode_comma (enc); |
438 | } |
734 | } |
439 | |
735 | |
440 | encode_nl (enc); |
736 | encode_nl (enc); --enc->indent; encode_indent (enc); |
441 | } |
737 | } |
|
|
738 | } |
442 | else |
739 | else |
|
|
740 | { |
|
|
741 | if (hv_iterinit (hv) || SvMAGICAL (hv)) |
|
|
742 | if ((he = hv_iternext (hv))) |
443 | { |
743 | { |
444 | HE *he = hv_iternext (hv); |
744 | encode_nl (enc); ++enc->indent; |
445 | |
745 | |
446 | for (;;) |
746 | for (;;) |
447 | { |
747 | { |
448 | encode_indent (enc); |
748 | encode_indent (enc); |
449 | encode_he (enc, he); |
749 | encode_hk (enc, he); |
|
|
750 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
450 | |
751 | |
451 | if (!(he = hv_iternext (hv))) |
752 | if (!(he = hv_iternext (hv))) |
452 | break; |
753 | break; |
453 | |
754 | |
454 | encode_comma (enc); |
755 | encode_comma (enc); |
455 | } |
756 | } |
456 | |
757 | |
457 | encode_nl (enc); |
758 | encode_nl (enc); --enc->indent; encode_indent (enc); |
458 | } |
759 | } |
459 | } |
760 | } |
460 | |
761 | |
461 | --enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
762 | encode_ch (enc, '}'); |
462 | } |
763 | } |
463 | |
764 | |
464 | // encode objects, arrays and special \0=false and \1=true values. |
765 | // encode objects, arrays and special \0=false and \1=true values. |
465 | static void |
766 | static void |
466 | encode_rv (enc_t *enc, SV *sv) |
767 | encode_rv (enc_t *enc, SV *sv) |
467 | { |
768 | { |
468 | svtype svt; |
769 | svtype svt; |
|
|
770 | GV *method; |
469 | |
771 | |
470 | SvGETMAGIC (sv); |
772 | SvGETMAGIC (sv); |
471 | svt = SvTYPE (sv); |
773 | svt = SvTYPE (sv); |
472 | |
774 | |
473 | if (expect_false (SvOBJECT (sv))) |
775 | if (expect_false (SvOBJECT (sv))) |
474 | { |
776 | { |
475 | if (SvSTASH (sv) == json_boolean_stash) |
777 | HV *stash = SvSTASH (sv); |
|
|
778 | |
|
|
779 | if (stash == bool_stash) |
476 | { |
780 | { |
477 | if (SvIV (sv) == 0) |
781 | if (SvIV (sv)) |
|
|
782 | encode_str (enc, "true", 4, 0); |
|
|
783 | else |
478 | encode_str (enc, "false", 5, 0); |
784 | encode_str (enc, "false", 5, 0); |
479 | else |
|
|
480 | encode_str (enc, "true", 4, 0); |
|
|
481 | } |
785 | } |
|
|
786 | else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0))) |
|
|
787 | { |
|
|
788 | int count; |
|
|
789 | dSP; |
|
|
790 | |
|
|
791 | ENTER; SAVETMPS; |
|
|
792 | SAVESTACK_POS (); |
|
|
793 | PUSHMARK (SP); |
|
|
794 | EXTEND (SP, 2); |
|
|
795 | // we re-bless the reference to get overload and other niceties right |
|
|
796 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
797 | PUSHs (sv_json); |
|
|
798 | |
|
|
799 | PUTBACK; |
|
|
800 | count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
801 | SPAGAIN; |
|
|
802 | |
|
|
803 | // catch this surprisingly common error |
|
|
804 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
805 | croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
806 | |
|
|
807 | encode_ch (enc, '('); |
|
|
808 | encode_ch (enc, '"'); |
|
|
809 | encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash)); |
|
|
810 | encode_ch (enc, '"'); |
|
|
811 | encode_ch (enc, ')'); |
|
|
812 | encode_ch (enc, '['); |
|
|
813 | |
|
|
814 | while (count) |
|
|
815 | { |
|
|
816 | encode_sv (enc, SP[1 - count--]); |
|
|
817 | |
|
|
818 | if (count) |
|
|
819 | encode_ch (enc, ','); |
|
|
820 | } |
|
|
821 | |
|
|
822 | encode_ch (enc, ']'); |
|
|
823 | |
|
|
824 | FREETMPS; LEAVE; |
|
|
825 | } |
|
|
826 | else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0))) |
|
|
827 | { |
|
|
828 | dSP; |
|
|
829 | |
|
|
830 | ENTER; SAVETMPS; |
|
|
831 | PUSHMARK (SP); |
|
|
832 | // we re-bless the reference to get overload and other niceties right |
|
|
833 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
834 | |
|
|
835 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
836 | PUTBACK; |
|
|
837 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
838 | SPAGAIN; |
|
|
839 | |
|
|
840 | // catch this surprisingly common error |
|
|
841 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
842 | croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
843 | |
|
|
844 | sv = POPs; |
|
|
845 | PUTBACK; |
|
|
846 | |
|
|
847 | encode_sv (enc, sv); |
|
|
848 | |
|
|
849 | FREETMPS; LEAVE; |
|
|
850 | } |
|
|
851 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
852 | encode_str (enc, "null", 4, 0); |
482 | else |
853 | 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", |
854 | croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)", |
520 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
855 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
521 | } |
|
|
522 | } |
856 | } |
523 | else if (svt == SVt_PVHV) |
857 | else if (svt == SVt_PVHV) |
524 | encode_hv (enc, (HV *)sv); |
858 | encode_hv (enc, (HV *)sv); |
525 | else if (svt == SVt_PVAV) |
859 | else if (svt == SVt_PVAV) |
526 | encode_av (enc, (AV *)sv); |
860 | encode_av (enc, (AV *)sv); |
527 | else if (svt < SVt_PVAV) |
861 | else if (svt < SVt_PVAV) |
528 | { |
862 | { |
529 | if (SvNIOK (sv) && SvIV (sv) == 0) |
863 | int bool_type = ref_bool_type (sv); |
|
|
864 | |
|
|
865 | if (bool_type == 1) |
|
|
866 | encode_str (enc, "true", 4, 0); |
|
|
867 | else if (bool_type == 0) |
530 | encode_str (enc, "false", 5, 0); |
868 | encode_str (enc, "false", 5, 0); |
531 | else if (SvNIOK (sv) && SvIV (sv) == 1) |
869 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
532 | encode_str (enc, "true", 4, 0); |
870 | encode_str (enc, "null", 4, 0); |
533 | else |
871 | else |
534 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
872 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
535 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
873 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
536 | } |
874 | } |
|
|
875 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
876 | encode_str (enc, "null", 4, 0); |
537 | else |
877 | else |
538 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
878 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
539 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
879 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
540 | } |
880 | } |
541 | |
881 | |
… | |
… | |
559 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
899 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
560 | enc->cur += strlen (enc->cur); |
900 | enc->cur += strlen (enc->cur); |
561 | } |
901 | } |
562 | else if (SvIOKp (sv)) |
902 | else if (SvIOKp (sv)) |
563 | { |
903 | { |
564 | // we assume we can always read an IV as a UV |
904 | // we assume we can always read an IV as a UV and vice versa |
565 | if (SvUV (sv) & ~(UV)0x7fff) |
905 | // we assume two's complement |
566 | { |
906 | // we assume no aliasing issues in the union |
567 | // large integer, use the (rather slow) snprintf way. |
907 | if (SvIsUV (sv) ? SvUVX (sv) <= 59000 |
568 | need (enc, sizeof (UV) * 3); |
908 | : SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000) |
569 | enc->cur += |
|
|
570 | SvIsUV(sv) |
|
|
571 | ? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv)) |
|
|
572 | : snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv)); |
|
|
573 | } |
|
|
574 | else |
|
|
575 | { |
909 | { |
576 | // optimise the "small number case" |
910 | // optimise the "small number case" |
577 | // code will likely be branchless and use only a single multiplication |
911 | // code will likely be branchless and use only a single multiplication |
|
|
912 | // works for numbers up to 59074 |
578 | I32 i = SvIV (sv); |
913 | I32 i = SvIVX (sv); |
579 | U32 u; |
914 | U32 u; |
580 | char digit, nz = 0; |
915 | char digit, nz = 0; |
581 | |
916 | |
582 | need (enc, 6); |
917 | need (enc, 6); |
583 | |
918 | |
… | |
… | |
589 | |
924 | |
590 | // now output digit by digit, each time masking out the integer part |
925 | // now output digit by digit, each time masking out the integer part |
591 | // and multiplying by 5 while moving the decimal point one to the right, |
926 | // and multiplying by 5 while moving the decimal point one to the right, |
592 | // resulting in a net multiplication by 10. |
927 | // resulting in a net multiplication by 10. |
593 | // we always write the digit to memory but conditionally increment |
928 | // we always write the digit to memory but conditionally increment |
594 | // the pointer, to ease the usage of conditional move instructions. |
929 | // the pointer, to enable the use of conditional move instructions. |
595 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffff) * 5; |
930 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffffUL) * 5; |
596 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffff) * 5; |
931 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffffUL) * 5; |
597 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffff) * 5; |
932 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffffUL) * 5; |
598 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffff) * 5; |
933 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffffUL) * 5; |
599 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
934 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
600 | } |
935 | } |
|
|
936 | else |
|
|
937 | { |
|
|
938 | // large integer, use the (rather slow) snprintf way. |
|
|
939 | need (enc, IVUV_MAXCHARS); |
|
|
940 | enc->cur += |
|
|
941 | SvIsUV(sv) |
|
|
942 | ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) |
|
|
943 | : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); |
|
|
944 | } |
601 | } |
945 | } |
602 | else if (SvROK (sv)) |
946 | else if (SvROK (sv)) |
603 | encode_rv (enc, SvRV (sv)); |
947 | encode_rv (enc, SvRV (sv)); |
604 | else if (!SvOK (sv)) |
948 | else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) |
605 | encode_str (enc, "null", 4, 0); |
949 | encode_str (enc, "null", 4, 0); |
606 | else |
950 | else |
607 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
951 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data", |
608 | SvPV_nolen (sv), SvFLAGS (sv)); |
952 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
609 | } |
953 | } |
610 | |
954 | |
611 | static SV * |
955 | static SV * |
612 | encode_json (SV *scalar, JSON *json) |
956 | encode_json (SV *scalar, JSON *json) |
613 | { |
957 | { |
614 | enc_t enc; |
958 | enc_t enc; |
615 | |
959 | |
616 | if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
960 | if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar)) |
617 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
961 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
618 | |
962 | |
619 | enc.json = *json; |
963 | enc.json = *json; |
620 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
964 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
621 | enc.cur = SvPVX (enc.sv); |
965 | enc.cur = SvPVX (enc.sv); |
622 | enc.end = SvEND (enc.sv); |
966 | enc.end = SvEND (enc.sv); |
623 | enc.indent = 0; |
967 | enc.indent = 0; |
624 | enc.maxdepth = DEC_DEPTH (enc.json.flags); |
968 | enc.limit = enc.json.flags & F_ASCII ? 0x000080UL |
|
|
969 | : enc.json.flags & F_LATIN1 ? 0x000100UL |
|
|
970 | : 0x110000UL; |
625 | |
971 | |
626 | SvPOK_only (enc.sv); |
972 | SvPOK_only (enc.sv); |
627 | encode_sv (&enc, scalar); |
973 | encode_sv (&enc, scalar); |
|
|
974 | encode_nl (&enc); |
628 | |
975 | |
629 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
976 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
630 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
977 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
631 | |
978 | |
632 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
979 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
… | |
… | |
650 | JSON json; |
997 | JSON json; |
651 | U32 depth; // recursion depth |
998 | U32 depth; // recursion depth |
652 | U32 maxdepth; // recursion depth limit |
999 | U32 maxdepth; // recursion depth limit |
653 | } dec_t; |
1000 | } dec_t; |
654 | |
1001 | |
655 | inline void |
1002 | INLINE void |
|
|
1003 | decode_comment (dec_t *dec) |
|
|
1004 | { |
|
|
1005 | // only '#'-style comments allowed a.t.m. |
|
|
1006 | |
|
|
1007 | while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d) |
|
|
1008 | ++dec->cur; |
|
|
1009 | } |
|
|
1010 | |
|
|
1011 | INLINE void |
656 | decode_ws (dec_t *dec) |
1012 | decode_ws (dec_t *dec) |
657 | { |
1013 | { |
658 | for (;;) |
1014 | for (;;) |
659 | { |
1015 | { |
660 | char ch = *dec->cur; |
1016 | char ch = *dec->cur; |
661 | |
1017 | |
662 | if (ch > 0x20 |
1018 | if (ch > 0x20) |
|
|
1019 | { |
|
|
1020 | if (expect_false (ch == '#')) |
|
|
1021 | { |
|
|
1022 | if (dec->json.flags & F_RELAXED) |
|
|
1023 | decode_comment (dec); |
|
|
1024 | else |
|
|
1025 | break; |
|
|
1026 | } |
|
|
1027 | else |
|
|
1028 | break; |
|
|
1029 | } |
663 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
1030 | else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09) |
664 | break; |
1031 | break; // parse error, but let higher level handle it, gives better error messages |
665 | |
1032 | |
666 | ++dec->cur; |
1033 | ++dec->cur; |
667 | } |
1034 | } |
668 | } |
1035 | } |
669 | |
1036 | |
… | |
… | |
673 | if (*dec->cur != ch) \ |
1040 | if (*dec->cur != ch) \ |
674 | ERR (# ch " expected"); \ |
1041 | ERR (# ch " expected"); \ |
675 | ++dec->cur; \ |
1042 | ++dec->cur; \ |
676 | SE |
1043 | SE |
677 | |
1044 | |
678 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
1045 | #define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED) |
679 | #define DEC_DEC_DEPTH --dec->depth |
1046 | #define DEC_DEC_DEPTH --dec->depth |
680 | |
1047 | |
681 | static SV *decode_sv (dec_t *dec); |
1048 | static SV *decode_sv (dec_t *dec); |
682 | |
1049 | |
683 | static signed char decode_hexdigit[256]; |
1050 | static signed char decode_hexdigit[256]; |
… | |
… | |
775 | |
1142 | |
776 | if (hi >= 0x80) |
1143 | if (hi >= 0x80) |
777 | { |
1144 | { |
778 | utf8 = 1; |
1145 | utf8 = 1; |
779 | |
1146 | |
780 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
1147 | cur = encode_utf8 (cur, hi); |
781 | } |
1148 | } |
782 | else |
1149 | else |
783 | *cur++ = hi; |
1150 | *cur++ = hi; |
784 | } |
1151 | } |
785 | break; |
1152 | break; |
… | |
… | |
787 | default: |
1154 | default: |
788 | --dec_cur; |
1155 | --dec_cur; |
789 | ERR ("illegal backslash escape sequence in string"); |
1156 | ERR ("illegal backslash escape sequence in string"); |
790 | } |
1157 | } |
791 | } |
1158 | } |
792 | else if (expect_true (ch >= 0x20 && ch <= 0x7f)) |
1159 | else if (expect_true (ch >= 0x20 && ch < 0x80)) |
793 | *cur++ = ch; |
1160 | *cur++ = ch; |
794 | else if (ch >= 0x80) |
1161 | else if (ch >= 0x80) |
795 | { |
1162 | { |
796 | STRLEN clen; |
1163 | STRLEN clen; |
797 | UV uch; |
|
|
798 | |
1164 | |
799 | --dec_cur; |
1165 | --dec_cur; |
800 | |
1166 | |
801 | uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
1167 | decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
802 | if (clen == (STRLEN)-1) |
1168 | if (clen == (STRLEN)-1) |
803 | ERR ("malformed UTF-8 character in JSON string"); |
1169 | ERR ("malformed UTF-8 character in JSON string"); |
804 | |
1170 | |
805 | do |
1171 | do |
806 | *cur++ = *dec_cur++; |
1172 | *cur++ = *dec_cur++; |
807 | while (--clen); |
1173 | while (--clen); |
808 | |
1174 | |
809 | utf8 = 1; |
1175 | utf8 = 1; |
810 | } |
1176 | } |
|
|
1177 | else if (ch == '\t' && dec->json.flags & F_RELAXED) |
|
|
1178 | *cur++ = ch; |
811 | else |
1179 | else |
812 | { |
1180 | { |
813 | --dec_cur; |
1181 | --dec_cur; |
814 | |
1182 | |
815 | if (!ch) |
1183 | if (!ch) |
… | |
… | |
823 | { |
1191 | { |
824 | STRLEN len = cur - buf; |
1192 | STRLEN len = cur - buf; |
825 | |
1193 | |
826 | if (sv) |
1194 | if (sv) |
827 | { |
1195 | { |
828 | SvGROW (sv, SvCUR (sv) + len + 1); |
1196 | STRLEN cur = SvCUR (sv); |
|
|
1197 | |
|
|
1198 | if (SvLEN (sv) - cur <= len) |
|
|
1199 | json_sv_grow (sv, cur, len); |
|
|
1200 | |
829 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
1201 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
830 | SvCUR_set (sv, SvCUR (sv) + len); |
1202 | SvCUR_set (sv, SvCUR (sv) + len); |
831 | } |
1203 | } |
832 | else |
1204 | else |
833 | sv = newSVpvn (buf, len); |
1205 | sv = newSVpvn (buf, len); |
… | |
… | |
918 | is_nv = 1; |
1290 | is_nv = 1; |
919 | } |
1291 | } |
920 | |
1292 | |
921 | if (!is_nv) |
1293 | if (!is_nv) |
922 | { |
1294 | { |
|
|
1295 | int len = dec->cur - start; |
|
|
1296 | |
923 | // special case the rather common 1..4-digit-int case, assumes 32 bit ints or so |
1297 | // special case the rather common 1..5-digit-int case |
924 | if (*start == '-') |
1298 | if (*start == '-') |
925 | switch (dec->cur - start) |
1299 | switch (len) |
926 | { |
1300 | { |
927 | case 2: return newSViv (-( start [1] - '0' * 1)); |
1301 | case 2: return newSViv (-(IV)( start [1] - '0' * 1)); |
928 | case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11)); |
1302 | case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11)); |
929 | case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
1303 | case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
930 | case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
1304 | case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
|
|
1305 | case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111)); |
931 | } |
1306 | } |
932 | else |
1307 | else |
933 | switch (dec->cur - start) |
1308 | switch (len) |
934 | { |
1309 | { |
935 | case 1: return newSViv ( start [0] - '0' * 1); |
1310 | case 1: return newSViv ( start [0] - '0' * 1); |
936 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
1311 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
937 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
1312 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
938 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
1313 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
1314 | case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111); |
939 | } |
1315 | } |
940 | |
1316 | |
941 | { |
1317 | { |
942 | UV uv; |
1318 | UV uv; |
943 | int numtype = grok_number (start, dec->cur - start, &uv); |
1319 | int numtype = grok_number (start, len, &uv); |
944 | if (numtype & IS_NUMBER_IN_UV) |
1320 | if (numtype & IS_NUMBER_IN_UV) |
945 | if (numtype & IS_NUMBER_NEG) |
1321 | if (numtype & IS_NUMBER_NEG) |
946 | { |
1322 | { |
947 | if (uv < (UV)IV_MIN) |
1323 | if (uv < (UV)IV_MIN) |
948 | return newSViv (-(IV)uv); |
1324 | return newSViv (-(IV)uv); |
949 | } |
1325 | } |
950 | else |
1326 | else |
951 | return newSVuv (uv); |
1327 | return newSVuv (uv); |
952 | |
|
|
953 | // here would likely be the place for bigint support |
|
|
954 | } |
1328 | } |
955 | } |
|
|
956 | |
1329 | |
957 | // if we ever support bigint or bigfloat, this is the place for bigfloat |
1330 | len -= *start == '-' ? 1 : 0; |
|
|
1331 | |
|
|
1332 | // does not fit into IV or UV, try NV |
|
|
1333 | if (len <= NV_DIG) |
|
|
1334 | // fits into NV without loss of precision |
|
|
1335 | return newSVnv (json_atof (start)); |
|
|
1336 | |
|
|
1337 | // everything else fails, convert it to a string |
|
|
1338 | return newSVpvn (start, dec->cur - start); |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | // loss of precision here |
958 | return newSVnv (Atof (start)); |
1342 | return newSVnv (json_atof (start)); |
959 | |
1343 | |
960 | fail: |
1344 | fail: |
961 | return 0; |
1345 | return 0; |
962 | } |
1346 | } |
963 | |
1347 | |
… | |
… | |
987 | if (*dec->cur == ']') |
1371 | if (*dec->cur == ']') |
988 | { |
1372 | { |
989 | ++dec->cur; |
1373 | ++dec->cur; |
990 | break; |
1374 | break; |
991 | } |
1375 | } |
992 | |
1376 | |
993 | if (*dec->cur != ',') |
1377 | if (*dec->cur != ',') |
994 | ERR (", or ] expected while parsing array"); |
1378 | ERR (", or ] expected while parsing array"); |
995 | |
1379 | |
996 | ++dec->cur; |
1380 | ++dec->cur; |
|
|
1381 | |
|
|
1382 | decode_ws (dec); |
|
|
1383 | |
|
|
1384 | if (*dec->cur == ']' && dec->json.flags & F_RELAXED) |
|
|
1385 | { |
|
|
1386 | ++dec->cur; |
|
|
1387 | break; |
|
|
1388 | } |
997 | } |
1389 | } |
998 | |
1390 | |
999 | DEC_DEC_DEPTH; |
1391 | DEC_DEC_DEPTH; |
1000 | return newRV_noinc ((SV *)av); |
1392 | return newRV_noinc ((SV *)av); |
1001 | |
1393 | |
… | |
… | |
1017 | if (*dec->cur == '}') |
1409 | if (*dec->cur == '}') |
1018 | ++dec->cur; |
1410 | ++dec->cur; |
1019 | else |
1411 | else |
1020 | for (;;) |
1412 | for (;;) |
1021 | { |
1413 | { |
1022 | decode_ws (dec); EXPECT_CH ('"'); |
1414 | EXPECT_CH ('"'); |
1023 | |
1415 | |
1024 | // heuristic: assume that |
1416 | // heuristic: assume that |
1025 | // a) decode_str + hv_store_ent are abysmally slow. |
1417 | // a) decode_str + hv_store_ent are abysmally slow. |
1026 | // b) most hash keys are short, simple ascii text. |
1418 | // b) most hash keys are short, simple ascii text. |
1027 | // => try to "fast-match" such strings to avoid |
1419 | // => try to "fast-match" such strings to avoid |
… | |
… | |
1031 | char *p = dec->cur; |
1423 | char *p = dec->cur; |
1032 | char *e = p + 24; // only try up to 24 bytes |
1424 | char *e = p + 24; // only try up to 24 bytes |
1033 | |
1425 | |
1034 | for (;;) |
1426 | for (;;) |
1035 | { |
1427 | { |
1036 | // the >= 0x80 is true on most architectures |
1428 | // the >= 0x80 is false on most architectures |
1037 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1429 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1038 | { |
1430 | { |
1039 | // slow path, back up and use decode_str |
1431 | // slow path, back up and use decode_str |
1040 | SV *key = decode_str (dec); |
1432 | SV *key = decode_str (dec); |
1041 | if (!key) |
1433 | if (!key) |
1042 | goto fail; |
1434 | goto fail; |
1043 | |
1435 | |
1044 | decode_ws (dec); EXPECT_CH (':'); |
1436 | decode_ws (dec); EXPECT_CH (':'); |
1045 | |
1437 | |
|
|
1438 | decode_ws (dec); |
1046 | value = decode_sv (dec); |
1439 | value = decode_sv (dec); |
1047 | if (!value) |
1440 | if (!value) |
1048 | { |
1441 | { |
1049 | SvREFCNT_dec (key); |
1442 | SvREFCNT_dec (key); |
1050 | goto fail; |
1443 | goto fail; |
… | |
… | |
1062 | int len = p - key; |
1455 | int len = p - key; |
1063 | dec->cur = p + 1; |
1456 | dec->cur = p + 1; |
1064 | |
1457 | |
1065 | decode_ws (dec); EXPECT_CH (':'); |
1458 | decode_ws (dec); EXPECT_CH (':'); |
1066 | |
1459 | |
|
|
1460 | decode_ws (dec); |
1067 | value = decode_sv (dec); |
1461 | value = decode_sv (dec); |
1068 | if (!value) |
1462 | if (!value) |
1069 | goto fail; |
1463 | goto fail; |
1070 | |
1464 | |
1071 | hv_store (hv, key, len, value, 0); |
1465 | hv_store (hv, key, len, value, 0); |
… | |
… | |
1087 | |
1481 | |
1088 | if (*dec->cur != ',') |
1482 | if (*dec->cur != ',') |
1089 | ERR (", or } expected while parsing object/hash"); |
1483 | ERR (", or } expected while parsing object/hash"); |
1090 | |
1484 | |
1091 | ++dec->cur; |
1485 | ++dec->cur; |
|
|
1486 | |
|
|
1487 | decode_ws (dec); |
|
|
1488 | |
|
|
1489 | if (*dec->cur == '}' && dec->json.flags & F_RELAXED) |
|
|
1490 | { |
|
|
1491 | ++dec->cur; |
|
|
1492 | break; |
|
|
1493 | } |
1092 | } |
1494 | } |
1093 | |
1495 | |
1094 | DEC_DEC_DEPTH; |
1496 | DEC_DEC_DEPTH; |
1095 | sv = newRV_noinc ((SV *)hv); |
1497 | sv = newRV_noinc ((SV *)hv); |
1096 | |
1498 | |
1097 | // check filter callbacks |
1499 | // check filter callbacks |
1098 | if (dec->json.flags & F_HOOK) |
1500 | if (dec->json.flags & F_HOOK) |
1099 | { |
1501 | { |
1100 | ENTER; SAVETMPS; |
1502 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
1101 | |
|
|
1102 | if (HvKEYS (hv) == 1 && dec->json.cb_sk_object) |
|
|
1103 | { |
1503 | { |
|
|
1504 | HE *cb, *he; |
|
|
1505 | |
|
|
1506 | hv_iterinit (hv); |
|
|
1507 | he = hv_iternext (hv); |
|
|
1508 | hv_iterinit (hv); |
|
|
1509 | |
|
|
1510 | // the next line creates a mortal sv each time it's called. |
|
|
1511 | // might want to optimise this for common cases. |
|
|
1512 | cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
1513 | |
|
|
1514 | if (cb) |
|
|
1515 | { |
|
|
1516 | dSP; |
1104 | int count; |
1517 | int count; |
1105 | |
1518 | |
|
|
1519 | ENTER; SAVETMPS; |
|
|
1520 | SAVESTACK_POS (); |
1106 | dSP; PUSHMARK (SP); |
1521 | PUSHMARK (SP); |
|
|
1522 | XPUSHs (HeVAL (he)); |
1107 | XPUSHs (sv_2mortal (sv)); |
1523 | sv_2mortal (sv); |
1108 | |
1524 | |
1109 | PUTBACK; count = call_sv (dec->json.cb_sk_object, G_ARRAY); SPAGAIN; |
1525 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
1110 | |
1526 | |
1111 | if (count == 1) |
1527 | if (count == 1) |
|
|
1528 | { |
1112 | sv = newSVsv (POPs); |
1529 | sv = newSVsv (POPs); |
1113 | else |
1530 | FREETMPS; LEAVE; |
|
|
1531 | return sv; |
|
|
1532 | } |
|
|
1533 | |
1114 | SvREFCNT_inc (sv); |
1534 | SvREFCNT_inc (sv); |
|
|
1535 | FREETMPS; LEAVE; |
|
|
1536 | } |
1115 | } |
1537 | } |
1116 | |
1538 | |
1117 | if (dec->json.cb_object) |
1539 | if (dec->json.cb_object) |
1118 | { |
1540 | { |
|
|
1541 | dSP; |
1119 | int count; |
1542 | int count; |
1120 | |
1543 | |
1121 | dSP; ENTER; SAVETMPS; PUSHMARK (SP); |
1544 | ENTER; SAVETMPS; |
|
|
1545 | SAVESTACK_POS (); |
|
|
1546 | PUSHMARK (SP); |
1122 | XPUSHs (sv_2mortal (sv)); |
1547 | XPUSHs (sv_2mortal (sv)); |
1123 | |
1548 | |
1124 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
1549 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
1125 | |
1550 | |
1126 | if (count == 1) |
1551 | if (count == 1) |
|
|
1552 | { |
1127 | sv = newSVsv (POPs); |
1553 | sv = newSVsv (POPs); |
1128 | else |
1554 | FREETMPS; LEAVE; |
|
|
1555 | return sv; |
|
|
1556 | } |
|
|
1557 | |
1129 | SvREFCNT_inc (sv); |
1558 | SvREFCNT_inc (sv); |
|
|
1559 | FREETMPS; LEAVE; |
1130 | } |
1560 | } |
1131 | |
|
|
1132 | FREETMPS; LEAVE; |
|
|
1133 | } |
1561 | } |
1134 | |
1562 | |
1135 | return newRV_noinc ((SV *)hv); |
1563 | return sv; |
1136 | |
1564 | |
1137 | fail: |
1565 | fail: |
1138 | SvREFCNT_dec (hv); |
1566 | SvREFCNT_dec (hv); |
1139 | DEC_DEC_DEPTH; |
1567 | DEC_DEC_DEPTH; |
1140 | return 0; |
1568 | return 0; |
1141 | } |
1569 | } |
1142 | |
1570 | |
1143 | static SV * |
1571 | static SV * |
|
|
1572 | decode_tag (dec_t *dec) |
|
|
1573 | { |
|
|
1574 | SV *tag = 0; |
|
|
1575 | SV *val = 0; |
|
|
1576 | |
|
|
1577 | if (!(dec->json.flags & F_ALLOW_TAGS)) |
|
|
1578 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
|
|
1579 | |
|
|
1580 | ++dec->cur; |
|
|
1581 | |
|
|
1582 | decode_ws (dec); |
|
|
1583 | |
|
|
1584 | tag = decode_sv (dec); |
|
|
1585 | if (!tag) |
|
|
1586 | goto fail; |
|
|
1587 | |
|
|
1588 | if (!SvPOK (tag)) |
|
|
1589 | ERR ("malformed JSON string, (tag) must be a string"); |
|
|
1590 | |
|
|
1591 | decode_ws (dec); |
|
|
1592 | |
|
|
1593 | if (*dec->cur != ')') |
|
|
1594 | ERR (") expected after tag"); |
|
|
1595 | |
|
|
1596 | ++dec->cur; |
|
|
1597 | |
|
|
1598 | decode_ws (dec); |
|
|
1599 | |
|
|
1600 | val = decode_sv (dec); |
|
|
1601 | if (!val) |
|
|
1602 | goto fail; |
|
|
1603 | |
|
|
1604 | if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV) |
|
|
1605 | ERR ("malformed JSON string, tag value must be an array"); |
|
|
1606 | |
|
|
1607 | { |
|
|
1608 | AV *av = (AV *)SvRV (val); |
|
|
1609 | int i, len = av_len (av) + 1; |
|
|
1610 | HV *stash = gv_stashsv (tag, 0); |
|
|
1611 | SV *sv; |
|
|
1612 | |
|
|
1613 | if (!stash) |
|
|
1614 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
1615 | |
|
|
1616 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
1617 | |
|
|
1618 | if (!method) |
|
|
1619 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
1620 | |
|
|
1621 | dSP; |
|
|
1622 | |
|
|
1623 | ENTER; SAVETMPS; |
|
|
1624 | PUSHMARK (SP); |
|
|
1625 | EXTEND (SP, len + 2); |
|
|
1626 | // we re-bless the reference to get overload and other niceties right |
|
|
1627 | PUSHs (tag); |
|
|
1628 | PUSHs (sv_json); |
|
|
1629 | |
|
|
1630 | for (i = 0; i < len; ++i) |
|
|
1631 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1632 | |
|
|
1633 | PUTBACK; |
|
|
1634 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
1635 | SPAGAIN; |
|
|
1636 | |
|
|
1637 | SvREFCNT_dec (tag); |
|
|
1638 | SvREFCNT_dec (val); |
|
|
1639 | sv = SvREFCNT_inc (POPs); |
|
|
1640 | |
|
|
1641 | PUTBACK; |
|
|
1642 | |
|
|
1643 | FREETMPS; LEAVE; |
|
|
1644 | |
|
|
1645 | return sv; |
|
|
1646 | } |
|
|
1647 | |
|
|
1648 | fail: |
|
|
1649 | SvREFCNT_dec (tag); |
|
|
1650 | SvREFCNT_dec (val); |
|
|
1651 | return 0; |
|
|
1652 | } |
|
|
1653 | |
|
|
1654 | static SV * |
1144 | decode_sv (dec_t *dec) |
1655 | decode_sv (dec_t *dec) |
1145 | { |
1656 | { |
1146 | decode_ws (dec); |
|
|
1147 | |
|
|
1148 | // the beauty of JSON: you need exactly one character lookahead |
1657 | // the beauty of JSON: you need exactly one character lookahead |
1149 | // to parse anything. |
1658 | // to parse everything. |
1150 | switch (*dec->cur) |
1659 | switch (*dec->cur) |
1151 | { |
1660 | { |
1152 | case '"': ++dec->cur; return decode_str (dec); |
1661 | case '"': ++dec->cur; return decode_str (dec); |
1153 | case '[': ++dec->cur; return decode_av (dec); |
1662 | case '[': ++dec->cur; return decode_av (dec); |
1154 | case '{': ++dec->cur; return decode_hv (dec); |
1663 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
1664 | case '(': return decode_tag (dec); |
1155 | |
1665 | |
1156 | case '-': |
1666 | case '-': |
1157 | case '0': case '1': case '2': case '3': case '4': |
1667 | case '0': case '1': case '2': case '3': case '4': |
1158 | case '5': case '6': case '7': case '8': case '9': |
1668 | case '5': case '6': case '7': case '8': case '9': |
1159 | return decode_num (dec); |
1669 | return decode_num (dec); |
1160 | |
1670 | |
1161 | case 't': |
1671 | case 't': |
1162 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1672 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1163 | { |
1673 | { |
1164 | dec->cur += 4; |
1674 | dec->cur += 4; |
1165 | return SvREFCNT_inc (json_true); |
1675 | #if JSON_SLOW |
|
|
1676 | bool_true = get_bool ("Types::Serialiser::true"); |
|
|
1677 | #endif |
|
|
1678 | return newSVsv (bool_true); |
1166 | } |
1679 | } |
1167 | else |
1680 | else |
1168 | ERR ("'true' expected"); |
1681 | ERR ("'true' expected"); |
1169 | |
1682 | |
1170 | break; |
1683 | break; |
1171 | |
1684 | |
1172 | case 'f': |
1685 | case 'f': |
1173 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1686 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1174 | { |
1687 | { |
1175 | dec->cur += 5; |
1688 | dec->cur += 5; |
|
|
1689 | #if JSON_SLOW |
|
|
1690 | bool_false = get_bool ("Types::Serialiser::false"); |
|
|
1691 | #endif |
1176 | return SvREFCNT_inc (json_false); |
1692 | return newSVsv (bool_false); |
1177 | } |
1693 | } |
1178 | else |
1694 | else |
1179 | ERR ("'false' expected"); |
1695 | ERR ("'false' expected"); |
1180 | |
1696 | |
1181 | break; |
1697 | break; |
… | |
… | |
1190 | ERR ("'null' expected"); |
1706 | ERR ("'null' expected"); |
1191 | |
1707 | |
1192 | break; |
1708 | break; |
1193 | |
1709 | |
1194 | default: |
1710 | default: |
1195 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
1711 | ERR ("malformed JSON string, neither tag, array, object, number, string or atom"); |
1196 | break; |
1712 | break; |
1197 | } |
1713 | } |
1198 | |
1714 | |
1199 | fail: |
1715 | fail: |
1200 | return 0; |
1716 | return 0; |
1201 | } |
1717 | } |
1202 | |
1718 | |
1203 | static SV * |
1719 | static SV * |
1204 | decode_json (SV *string, JSON *json, UV *offset_return) |
1720 | decode_json (SV *string, JSON *json, STRLEN *offset_return) |
1205 | { |
1721 | { |
1206 | dec_t dec; |
1722 | dec_t dec; |
1207 | UV offset; |
|
|
1208 | SV *sv; |
1723 | SV *sv; |
1209 | |
1724 | |
|
|
1725 | /* work around bugs in 5.10 where manipulating magic values |
|
|
1726 | * makes perl ignore the magic in subsequent accesses. |
|
|
1727 | * also make a copy of non-PV values, to get them into a clean |
|
|
1728 | * state (SvPV should do that, but it's buggy, see below). |
|
|
1729 | * |
|
|
1730 | * SvIsCOW_shared_hash works around a bug in perl (possibly 5.16), |
|
|
1731 | * as reported by Reini Urban. |
|
|
1732 | */ |
1210 | SvGETMAGIC (string); |
1733 | /*SvGETMAGIC (string);*/ |
|
|
1734 | if (SvMAGICAL (string) || !SvPOK (string) || SvIsCOW_shared_hash (string)) |
|
|
1735 | string = sv_2mortal (newSVsv (string)); |
|
|
1736 | |
1211 | SvUPGRADE (string, SVt_PV); |
1737 | SvUPGRADE (string, SVt_PV); |
1212 | |
1738 | |
1213 | if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags)) |
1739 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
1740 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
1741 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
1742 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
1743 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
1744 | * and hope for the best. |
|
|
1745 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
1746 | * assertion business is seriously broken, try yet another workaround |
|
|
1747 | * for the broken -DDEBUGGING. |
|
|
1748 | */ |
|
|
1749 | { |
|
|
1750 | #ifdef DEBUGGING |
|
|
1751 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
1752 | #else |
|
|
1753 | STRLEN offset = SvCUR (string); |
|
|
1754 | #endif |
|
|
1755 | |
|
|
1756 | if (offset > json->max_size && json->max_size) |
1214 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
1757 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
1215 | (unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags)); |
1758 | (unsigned long)SvCUR (string), (unsigned long)json->max_size); |
|
|
1759 | } |
1216 | |
1760 | |
1217 | if (json->flags & F_UTF8) |
1761 | if (DECODE_WANTS_OCTETS (json)) |
1218 | sv_utf8_downgrade (string, 0); |
1762 | sv_utf8_downgrade (string, 0); |
1219 | else |
1763 | else |
1220 | sv_utf8_upgrade (string); |
1764 | sv_utf8_upgrade (string); |
1221 | |
1765 | |
1222 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1766 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1223 | |
1767 | |
1224 | dec.json = *json; |
1768 | dec.json = *json; |
1225 | dec.cur = SvPVX (string); |
1769 | dec.cur = SvPVX (string); |
1226 | dec.end = SvEND (string); |
1770 | dec.end = SvEND (string); |
1227 | dec.err = 0; |
1771 | dec.err = 0; |
1228 | dec.depth = 0; |
1772 | dec.depth = 0; |
1229 | dec.maxdepth = DEC_DEPTH (dec.json.flags); |
|
|
1230 | |
1773 | |
1231 | if (dec.json.cb_object || dec.json.cb_sk_object) |
1774 | if (dec.json.cb_object || dec.json.cb_sk_object) |
1232 | dec.json.flags |= F_HOOK; |
1775 | dec.json.flags |= F_HOOK; |
1233 | |
1776 | |
1234 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
1777 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1778 | |
|
|
1779 | decode_ws (&dec); |
1235 | sv = decode_sv (&dec); |
1780 | sv = decode_sv (&dec); |
1236 | |
1781 | |
1237 | if (!(offset_return || !sv)) |
1782 | if (offset_return) |
|
|
1783 | *offset_return = dec.cur - SvPVX (string); |
|
|
1784 | else if (sv) |
1238 | { |
1785 | { |
1239 | // check for trailing garbage |
1786 | // check for trailing garbage |
1240 | decode_ws (&dec); |
1787 | decode_ws (&dec); |
1241 | |
1788 | |
1242 | if (*dec.cur) |
1789 | if (*dec.cur) |
1243 | { |
1790 | { |
1244 | dec.err = "garbage after JSON object"; |
1791 | dec.err = "garbage after JSON object"; |
1245 | SvREFCNT_dec (sv); |
1792 | SvREFCNT_dec (sv); |
1246 | sv = 0; |
1793 | sv = 0; |
1247 | } |
1794 | } |
1248 | } |
|
|
1249 | |
|
|
1250 | if (offset_return || !sv) |
|
|
1251 | { |
|
|
1252 | offset = dec.json.flags & F_UTF8 |
|
|
1253 | ? dec.cur - SvPVX (string) |
|
|
1254 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
1255 | |
|
|
1256 | if (offset_return) |
|
|
1257 | *offset_return = offset; |
|
|
1258 | } |
1795 | } |
1259 | |
1796 | |
1260 | if (!sv) |
1797 | if (!sv) |
1261 | { |
1798 | { |
1262 | SV *uni = sv_newmortal (); |
1799 | SV *uni = sv_newmortal (); |
… | |
… | |
1268 | SAVEVPTR (PL_curcop); |
1805 | SAVEVPTR (PL_curcop); |
1269 | PL_curcop = &cop; |
1806 | PL_curcop = &cop; |
1270 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1807 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1271 | LEAVE; |
1808 | LEAVE; |
1272 | |
1809 | |
1273 | croak ("%s, at character offset %d [\"%s\"]", |
1810 | croak ("%s, at character offset %d (before \"%s\")", |
1274 | dec.err, |
1811 | dec.err, |
1275 | (int)offset, |
1812 | (int)ptr_to_index (string, dec.cur), |
1276 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1813 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1277 | } |
1814 | } |
1278 | |
1815 | |
1279 | sv = sv_2mortal (sv); |
1816 | sv = sv_2mortal (sv); |
1280 | |
1817 | |
1281 | if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1818 | if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv)) |
1282 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1819 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1283 | |
1820 | |
1284 | return sv; |
1821 | return sv; |
|
|
1822 | } |
|
|
1823 | |
|
|
1824 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1825 | // incremental parser |
|
|
1826 | |
|
|
1827 | static void |
|
|
1828 | incr_parse (JSON *self) |
|
|
1829 | { |
|
|
1830 | const char *p = SvPVX (self->incr_text) + self->incr_pos; |
|
|
1831 | |
|
|
1832 | // the state machine here is a bit convoluted and could be simplified a lot |
|
|
1833 | // but this would make it slower, so... |
|
|
1834 | |
|
|
1835 | for (;;) |
|
|
1836 | { |
|
|
1837 | //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 |
|
|
1838 | switch (self->incr_mode) |
|
|
1839 | { |
|
|
1840 | // only used for initial whitespace skipping |
|
|
1841 | case INCR_M_WS: |
|
|
1842 | for (;;) |
|
|
1843 | { |
|
|
1844 | if (*p > 0x20) |
|
|
1845 | { |
|
|
1846 | if (*p == '#') |
|
|
1847 | { |
|
|
1848 | self->incr_mode = INCR_M_C0; |
|
|
1849 | goto incr_m_c; |
|
|
1850 | } |
|
|
1851 | else |
|
|
1852 | { |
|
|
1853 | self->incr_mode = INCR_M_JSON; |
|
|
1854 | goto incr_m_json; |
|
|
1855 | } |
|
|
1856 | } |
|
|
1857 | else if (!*p) |
|
|
1858 | goto interrupt; |
|
|
1859 | |
|
|
1860 | ++p; |
|
|
1861 | } |
|
|
1862 | |
|
|
1863 | // skip a single char inside a string (for \\-processing) |
|
|
1864 | case INCR_M_BS: |
|
|
1865 | if (!*p) |
|
|
1866 | goto interrupt; |
|
|
1867 | |
|
|
1868 | ++p; |
|
|
1869 | self->incr_mode = INCR_M_STR; |
|
|
1870 | goto incr_m_str; |
|
|
1871 | |
|
|
1872 | // inside #-style comments |
|
|
1873 | case INCR_M_C0: |
|
|
1874 | case INCR_M_C1: |
|
|
1875 | incr_m_c: |
|
|
1876 | for (;;) |
|
|
1877 | { |
|
|
1878 | if (*p == '\n') |
|
|
1879 | { |
|
|
1880 | self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON; |
|
|
1881 | break; |
|
|
1882 | } |
|
|
1883 | else if (!*p) |
|
|
1884 | goto interrupt; |
|
|
1885 | |
|
|
1886 | ++p; |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | break; |
|
|
1890 | |
|
|
1891 | // inside a string |
|
|
1892 | case INCR_M_STR: |
|
|
1893 | incr_m_str: |
|
|
1894 | for (;;) |
|
|
1895 | { |
|
|
1896 | if (*p == '"') |
|
|
1897 | { |
|
|
1898 | ++p; |
|
|
1899 | self->incr_mode = INCR_M_JSON; |
|
|
1900 | |
|
|
1901 | if (!self->incr_nest) |
|
|
1902 | goto interrupt; |
|
|
1903 | |
|
|
1904 | goto incr_m_json; |
|
|
1905 | } |
|
|
1906 | else if (*p == '\\') |
|
|
1907 | { |
|
|
1908 | ++p; // "virtually" consumes character after \ |
|
|
1909 | |
|
|
1910 | if (!*p) // if at end of string we have to switch modes |
|
|
1911 | { |
|
|
1912 | self->incr_mode = INCR_M_BS; |
|
|
1913 | goto interrupt; |
|
|
1914 | } |
|
|
1915 | } |
|
|
1916 | else if (!*p) |
|
|
1917 | goto interrupt; |
|
|
1918 | |
|
|
1919 | ++p; |
|
|
1920 | } |
|
|
1921 | |
|
|
1922 | // after initial ws, outside string |
|
|
1923 | case INCR_M_JSON: |
|
|
1924 | incr_m_json: |
|
|
1925 | for (;;) |
|
|
1926 | { |
|
|
1927 | switch (*p++) |
|
|
1928 | { |
|
|
1929 | case 0: |
|
|
1930 | --p; |
|
|
1931 | goto interrupt; |
|
|
1932 | |
|
|
1933 | case 0x09: |
|
|
1934 | case 0x0a: |
|
|
1935 | case 0x0d: |
|
|
1936 | case 0x20: |
|
|
1937 | if (!self->incr_nest) |
|
|
1938 | { |
|
|
1939 | --p; // do not eat the whitespace, let the next round do it |
|
|
1940 | goto interrupt; |
|
|
1941 | } |
|
|
1942 | break; |
|
|
1943 | |
|
|
1944 | case '"': |
|
|
1945 | self->incr_mode = INCR_M_STR; |
|
|
1946 | goto incr_m_str; |
|
|
1947 | |
|
|
1948 | case '[': |
|
|
1949 | case '{': |
|
|
1950 | case '(': |
|
|
1951 | if (++self->incr_nest > self->max_depth) |
|
|
1952 | croak (ERR_NESTING_EXCEEDED); |
|
|
1953 | break; |
|
|
1954 | |
|
|
1955 | case ']': |
|
|
1956 | case '}': |
|
|
1957 | if (--self->incr_nest <= 0) |
|
|
1958 | goto interrupt; |
|
|
1959 | break; |
|
|
1960 | |
|
|
1961 | case ')': |
|
|
1962 | --self->incr_nest; |
|
|
1963 | break; |
|
|
1964 | |
|
|
1965 | case '#': |
|
|
1966 | self->incr_mode = INCR_M_C1; |
|
|
1967 | goto incr_m_c; |
|
|
1968 | } |
|
|
1969 | } |
|
|
1970 | } |
|
|
1971 | |
|
|
1972 | modechange: |
|
|
1973 | ; |
|
|
1974 | } |
|
|
1975 | |
|
|
1976 | interrupt: |
|
|
1977 | self->incr_pos = p - SvPVX (self->incr_text); |
|
|
1978 | //printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D |
|
|
1979 | //printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D |
1285 | } |
1980 | } |
1286 | |
1981 | |
1287 | ///////////////////////////////////////////////////////////////////////////// |
1982 | ///////////////////////////////////////////////////////////////////////////// |
1288 | // XS interface functions |
1983 | // XS interface functions |
1289 | |
1984 | |
… | |
… | |
1298 | i >= '0' && i <= '9' ? i - '0' |
1993 | i >= '0' && i <= '9' ? i - '0' |
1299 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
1994 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
1300 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
1995 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
1301 | : -1; |
1996 | : -1; |
1302 | |
1997 | |
1303 | json_stash = gv_stashpv ("JSON::XS" , 1); |
1998 | json_stash = gv_stashpv ("JSON::XS" , 1); |
1304 | json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); |
1999 | bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
|
|
2000 | bool_true = get_bool ("Types::Serialiser::true"); |
|
|
2001 | bool_false = get_bool ("Types::Serialiser::false"); |
1305 | |
2002 | |
1306 | json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true ); |
2003 | sv_json = newSVpv ("JSON", 0); |
1307 | json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false); |
2004 | SvREADONLY_on (sv_json); |
|
|
2005 | |
|
|
2006 | CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ |
1308 | } |
2007 | } |
1309 | |
2008 | |
1310 | PROTOTYPES: DISABLE |
2009 | PROTOTYPES: DISABLE |
|
|
2010 | |
|
|
2011 | void CLONE (...) |
|
|
2012 | CODE: |
|
|
2013 | json_stash = 0; |
|
|
2014 | bool_stash = 0; |
1311 | |
2015 | |
1312 | void new (char *klass) |
2016 | void new (char *klass) |
1313 | PPCODE: |
2017 | PPCODE: |
1314 | { |
2018 | { |
1315 | SV *pv = NEWSV (0, sizeof (JSON)); |
2019 | SV *pv = NEWSV (0, sizeof (JSON)); |
1316 | SvPOK_only (pv); |
2020 | SvPOK_only (pv); |
1317 | Zero (SvPVX (pv), 1, JSON); |
2021 | json_init ((JSON *)SvPVX (pv)); |
1318 | ((JSON *)SvPVX (pv))->flags = F_DEFAULT; |
2022 | XPUSHs (sv_2mortal (sv_bless ( |
1319 | XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), json_stash))); |
2023 | newRV_noinc (pv), |
|
|
2024 | strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) |
|
|
2025 | ))); |
1320 | } |
2026 | } |
1321 | |
2027 | |
1322 | void ascii (JSON *self, int enable = 1) |
2028 | void ascii (JSON *self, int enable = 1) |
1323 | ALIAS: |
2029 | ALIAS: |
1324 | ascii = F_ASCII |
2030 | ascii = F_ASCII |
… | |
… | |
1331 | pretty = F_PRETTY |
2037 | pretty = F_PRETTY |
1332 | allow_nonref = F_ALLOW_NONREF |
2038 | allow_nonref = F_ALLOW_NONREF |
1333 | shrink = F_SHRINK |
2039 | shrink = F_SHRINK |
1334 | allow_blessed = F_ALLOW_BLESSED |
2040 | allow_blessed = F_ALLOW_BLESSED |
1335 | convert_blessed = F_CONV_BLESSED |
2041 | convert_blessed = F_CONV_BLESSED |
|
|
2042 | relaxed = F_RELAXED |
|
|
2043 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
2044 | allow_tags = F_ALLOW_TAGS |
1336 | PPCODE: |
2045 | PPCODE: |
1337 | { |
2046 | { |
1338 | if (enable) |
2047 | if (enable) |
1339 | self->flags |= ix; |
2048 | self->flags |= ix; |
1340 | else |
2049 | else |
1341 | self->flags &= ~ix; |
2050 | self->flags &= ~ix; |
1342 | |
2051 | |
1343 | XPUSHs (ST (0)); |
2052 | XPUSHs (ST (0)); |
1344 | } |
2053 | } |
1345 | |
2054 | |
1346 | void max_depth (JSON *self, UV max_depth = 0x80000000UL) |
2055 | void get_ascii (JSON *self) |
|
|
2056 | ALIAS: |
|
|
2057 | get_ascii = F_ASCII |
|
|
2058 | get_latin1 = F_LATIN1 |
|
|
2059 | get_utf8 = F_UTF8 |
|
|
2060 | get_indent = F_INDENT |
|
|
2061 | get_canonical = F_CANONICAL |
|
|
2062 | get_space_before = F_SPACE_BEFORE |
|
|
2063 | get_space_after = F_SPACE_AFTER |
|
|
2064 | get_allow_nonref = F_ALLOW_NONREF |
|
|
2065 | get_shrink = F_SHRINK |
|
|
2066 | get_allow_blessed = F_ALLOW_BLESSED |
|
|
2067 | get_convert_blessed = F_CONV_BLESSED |
|
|
2068 | get_relaxed = F_RELAXED |
|
|
2069 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
2070 | get_allow_tags = F_ALLOW_TAGS |
1347 | PPCODE: |
2071 | PPCODE: |
1348 | { |
2072 | XPUSHs (boolSV (self->flags & ix)); |
1349 | UV log2 = 0; |
|
|
1350 | |
2073 | |
1351 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
2074 | void max_depth (JSON *self, U32 max_depth = 0x80000000UL) |
1352 | |
2075 | PPCODE: |
1353 | while ((1UL << log2) < max_depth) |
2076 | self->max_depth = max_depth; |
1354 | ++log2; |
|
|
1355 | |
|
|
1356 | self->flags = self->flags & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1357 | |
|
|
1358 | XPUSHs (ST (0)); |
2077 | XPUSHs (ST (0)); |
1359 | } |
|
|
1360 | |
2078 | |
|
|
2079 | U32 get_max_depth (JSON *self) |
|
|
2080 | CODE: |
|
|
2081 | RETVAL = self->max_depth; |
|
|
2082 | OUTPUT: |
|
|
2083 | RETVAL |
|
|
2084 | |
1361 | void max_size (JSON *self, UV max_size = 0) |
2085 | void max_size (JSON *self, U32 max_size = 0) |
1362 | PPCODE: |
2086 | PPCODE: |
1363 | { |
2087 | self->max_size = max_size; |
1364 | UV log2 = 0; |
|
|
1365 | |
|
|
1366 | if (max_size > 0x80000000UL) max_size = 0x80000000UL; |
|
|
1367 | if (max_size == 1) max_size = 2; |
|
|
1368 | |
|
|
1369 | while ((1UL << log2) < max_size) |
|
|
1370 | ++log2; |
|
|
1371 | |
|
|
1372 | self->flags = self->flags & ~F_MAXSIZE | (log2 << S_MAXSIZE); |
|
|
1373 | |
|
|
1374 | XPUSHs (ST (0)); |
2088 | XPUSHs (ST (0)); |
1375 | } |
|
|
1376 | |
2089 | |
|
|
2090 | int get_max_size (JSON *self) |
|
|
2091 | CODE: |
|
|
2092 | RETVAL = self->max_size; |
|
|
2093 | OUTPUT: |
|
|
2094 | RETVAL |
|
|
2095 | |
1377 | void filter_json_objects (JSON *self, SV *cb = &PL_sv_undef) |
2096 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
1378 | ALIAS: |
|
|
1379 | filter_sk_json_objects = 1 |
|
|
1380 | PPCODE: |
2097 | PPCODE: |
1381 | { |
2098 | { |
|
|
2099 | SvREFCNT_dec (self->cb_object); |
|
|
2100 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
2101 | |
|
|
2102 | XPUSHs (ST (0)); |
|
|
2103 | } |
|
|
2104 | |
|
|
2105 | void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) |
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|
2106 | PPCODE: |
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|
2107 | { |
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|
2108 | if (!self->cb_sk_object) |
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|
2109 | self->cb_sk_object = newHV (); |
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|
2110 | |
1382 | if (!SvOK (cb)) |
2111 | if (SvOK (cb)) |
1383 | cb = 0; |
2112 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
1384 | |
2113 | else |
1385 | switch (ix) |
|
|
1386 | { |
2114 | { |
1387 | case 0: self->cb_object = cb; break; |
2115 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
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|
2116 | |
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|
2117 | if (!HvKEYS (self->cb_sk_object)) |
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|
2118 | { |
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2119 | SvREFCNT_dec (self->cb_sk_object); |
1388 | case 1: self->cb_sk_object = cb; break; |
2120 | self->cb_sk_object = 0; |
|
|
2121 | } |
1389 | } |
2122 | } |
1390 | |
2123 | |
1391 | XPUSHs (ST (0)); |
2124 | XPUSHs (ST (0)); |
1392 | } |
2125 | } |
1393 | |
2126 | |
1394 | void encode (JSON *self, SV *scalar) |
2127 | void encode (JSON *self, SV *scalar) |
1395 | PPCODE: |
2128 | PPCODE: |
1396 | XPUSHs (encode_json (scalar, self)); |
2129 | PUTBACK; scalar = encode_json (scalar, self); SPAGAIN; |
|
|
2130 | XPUSHs (scalar); |
1397 | |
2131 | |
1398 | void decode (JSON *self, SV *jsonstr) |
2132 | void decode (JSON *self, SV *jsonstr) |
1399 | PPCODE: |
2133 | PPCODE: |
1400 | XPUSHs (decode_json (jsonstr, self, 0)); |
2134 | PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN; |
|
|
2135 | XPUSHs (jsonstr); |
1401 | |
2136 | |
1402 | void decode_prefix (JSON *self, SV *jsonstr) |
2137 | void decode_prefix (JSON *self, SV *jsonstr) |
1403 | PPCODE: |
2138 | PPCODE: |
1404 | { |
2139 | { |
1405 | UV offset; |
2140 | SV *sv; |
|
|
2141 | STRLEN offset; |
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|
2142 | PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN; |
1406 | EXTEND (SP, 2); |
2143 | EXTEND (SP, 2); |
1407 | PUSHs (decode_json (jsonstr, self, &offset)); |
2144 | PUSHs (sv); |
1408 | PUSHs (sv_2mortal (newSVuv (offset))); |
2145 | PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset)))); |
1409 | } |
2146 | } |
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|
2147 | |
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2148 | void incr_parse (JSON *self, SV *jsonstr = 0) |
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|
2149 | PPCODE: |
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|
2150 | { |
|
|
2151 | if (!self->incr_text) |
|
|
2152 | self->incr_text = newSVpvn ("", 0); |
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2153 | |
|
|
2154 | /* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */ |
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|
2155 | if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text)) |
|
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2156 | if (DECODE_WANTS_OCTETS (self)) |
|
|
2157 | { |
|
|
2158 | if (self->incr_pos) |
|
|
2159 | self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text), |
|
|
2160 | (U8 *)SvPVX (self->incr_text) + self->incr_pos); |
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2161 | |
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2162 | sv_utf8_downgrade (self->incr_text, 0); |
|
|
2163 | } |
|
|
2164 | else |
|
|
2165 | { |
|
|
2166 | sv_utf8_upgrade (self->incr_text); |
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2167 | |
|
|
2168 | if (self->incr_pos) |
|
|
2169 | self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos) |
|
|
2170 | - (U8 *)SvPVX (self->incr_text); |
|
|
2171 | } |
|
|
2172 | |
|
|
2173 | // append data, if any |
|
|
2174 | if (jsonstr) |
|
|
2175 | { |
|
|
2176 | /* make sure both strings have same encoding */ |
|
|
2177 | if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text)) |
|
|
2178 | if (SvUTF8 (jsonstr)) |
|
|
2179 | sv_utf8_downgrade (jsonstr, 0); |
|
|
2180 | else |
|
|
2181 | sv_utf8_upgrade (jsonstr); |
|
|
2182 | |
|
|
2183 | /* and then just blindly append */ |
|
|
2184 | { |
|
|
2185 | STRLEN len; |
|
|
2186 | const char *str = SvPV (jsonstr, len); |
|
|
2187 | STRLEN cur = SvCUR (self->incr_text); |
|
|
2188 | |
|
|
2189 | if (SvLEN (self->incr_text) - cur <= len) |
|
|
2190 | json_sv_grow (self->incr_text, cur, len); |
|
|
2191 | |
|
|
2192 | Move (str, SvEND (self->incr_text), len, char); |
|
|
2193 | SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); |
|
|
2194 | *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there |
|
|
2195 | } |
|
|
2196 | } |
|
|
2197 | |
|
|
2198 | if (GIMME_V != G_VOID) |
|
|
2199 | do |
|
|
2200 | { |
|
|
2201 | SV *sv; |
|
|
2202 | STRLEN offset; |
|
|
2203 | |
|
|
2204 | if (!INCR_DONE (self)) |
|
|
2205 | { |
|
|
2206 | incr_parse (self); |
|
|
2207 | |
|
|
2208 | if (self->incr_pos > self->max_size && self->max_size) |
|
|
2209 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
2210 | (unsigned long)self->incr_pos, (unsigned long)self->max_size); |
|
|
2211 | |
|
|
2212 | if (!INCR_DONE (self)) |
|
|
2213 | { |
|
|
2214 | // as an optimisation, do not accumulate white space in the incr buffer |
|
|
2215 | if (self->incr_mode == INCR_M_WS && self->incr_pos) |
|
|
2216 | { |
|
|
2217 | self->incr_pos = 0; |
|
|
2218 | SvCUR_set (self->incr_text, 0); |
|
|
2219 | } |
|
|
2220 | |
|
|
2221 | break; |
|
|
2222 | } |
|
|
2223 | } |
|
|
2224 | |
|
|
2225 | PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN; |
|
|
2226 | XPUSHs (sv); |
|
|
2227 | |
|
|
2228 | self->incr_pos -= offset; |
|
|
2229 | self->incr_nest = 0; |
|
|
2230 | self->incr_mode = 0; |
|
|
2231 | |
|
|
2232 | sv_chop (self->incr_text, SvPVX (self->incr_text) + offset); |
|
|
2233 | } |
|
|
2234 | while (GIMME_V == G_ARRAY); |
|
|
2235 | } |
|
|
2236 | |
|
|
2237 | SV *incr_text (JSON *self) |
|
|
2238 | ATTRS: lvalue |
|
|
2239 | CODE: |
|
|
2240 | { |
|
|
2241 | if (self->incr_pos) |
|
|
2242 | croak ("incr_text can not be called when the incremental parser already started parsing"); |
|
|
2243 | |
|
|
2244 | RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef; |
|
|
2245 | } |
|
|
2246 | OUTPUT: |
|
|
2247 | RETVAL |
|
|
2248 | |
|
|
2249 | void incr_skip (JSON *self) |
|
|
2250 | CODE: |
|
|
2251 | { |
|
|
2252 | if (self->incr_pos) |
|
|
2253 | { |
|
|
2254 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos); |
|
|
2255 | self->incr_pos = 0; |
|
|
2256 | self->incr_nest = 0; |
|
|
2257 | self->incr_mode = 0; |
|
|
2258 | } |
|
|
2259 | } |
|
|
2260 | |
|
|
2261 | void incr_reset (JSON *self) |
|
|
2262 | CODE: |
|
|
2263 | { |
|
|
2264 | SvREFCNT_dec (self->incr_text); |
|
|
2265 | self->incr_text = 0; |
|
|
2266 | self->incr_pos = 0; |
|
|
2267 | self->incr_nest = 0; |
|
|
2268 | self->incr_mode = 0; |
|
|
2269 | } |
|
|
2270 | |
|
|
2271 | void DESTROY (JSON *self) |
|
|
2272 | CODE: |
|
|
2273 | SvREFCNT_dec (self->cb_sk_object); |
|
|
2274 | SvREFCNT_dec (self->cb_object); |
|
|
2275 | SvREFCNT_dec (self->incr_text); |
1410 | |
2276 | |
1411 | PROTOTYPES: ENABLE |
2277 | PROTOTYPES: ENABLE |
1412 | |
2278 | |
1413 | void to_json (SV *scalar) |
2279 | void encode_json (SV *scalar) |
1414 | PPCODE: |
2280 | PPCODE: |
1415 | { |
2281 | { |
1416 | JSON json = { F_DEFAULT | F_UTF8 }; |
2282 | JSON json; |
1417 | XPUSHs (encode_json (scalar, &json)); |
2283 | json_init (&json); |
|
|
2284 | json.flags |= F_UTF8; |
|
|
2285 | PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN; |
|
|
2286 | XPUSHs (scalar); |
1418 | } |
2287 | } |
1419 | |
2288 | |
1420 | void from_json (SV *jsonstr) |
2289 | void decode_json (SV *jsonstr) |
1421 | PPCODE: |
2290 | PPCODE: |
1422 | { |
2291 | { |
1423 | JSON json = { F_DEFAULT | F_UTF8 }; |
2292 | JSON json; |
1424 | XPUSHs (decode_json (jsonstr, &json, 0)); |
2293 | json_init (&json); |
|
|
2294 | json.flags |= F_UTF8; |
|
|
2295 | PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN; |
|
|
2296 | XPUSHs (jsonstr); |
1425 | } |
2297 | } |
1426 | |
2298 | |