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> |
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8 | #include <stdio.h> |
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9 | #include <limits.h> |
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10 | #include <float.h> |
8 | |
11 | |
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12 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
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13 | # define snprintf _snprintf // C compilers have this in stdio.h |
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14 | #endif |
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15 | |
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16 | // some old perls do not have this, try to make it work, no |
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17 | // guarantees, though. if it breaks, you get to keep the pieces. |
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18 | #ifndef UTF8_MAXBYTES |
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19 | # define UTF8_MAXBYTES 13 |
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20 | #endif |
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21 | |
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22 | // compatibility with perl <5.18 |
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23 | #ifndef HvNAMELEN_get |
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24 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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25 | #endif |
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26 | #ifndef HvNAMELEN |
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27 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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28 | #endif |
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29 | #ifndef HvNAMEUTF8 |
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30 | # define HvNAMEUTF8(hv) 0 |
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31 | #endif |
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32 | |
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33 | // three extra for rounding, sign, and end of string |
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34 | #define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3) |
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35 | |
9 | #define F_ASCII 0x00000001UL |
36 | #define F_ASCII 0x00000001UL |
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37 | #define F_LATIN1 0x00000002UL |
10 | #define F_UTF8 0x00000002UL |
38 | #define F_UTF8 0x00000004UL |
11 | #define F_INDENT 0x00000004UL |
39 | #define F_INDENT 0x00000008UL |
12 | #define F_CANONICAL 0x00000008UL |
40 | #define F_CANONICAL 0x00000010UL |
13 | #define F_SPACE_BEFORE 0x00000010UL |
41 | #define F_SPACE_BEFORE 0x00000020UL |
14 | #define F_SPACE_AFTER 0x00000020UL |
42 | #define F_SPACE_AFTER 0x00000040UL |
15 | #define F_ALLOW_NONREF 0x00000080UL |
43 | #define F_ALLOW_NONREF 0x00000100UL |
16 | #define F_SHRINK 0x00000100UL |
44 | #define F_SHRINK 0x00000200UL |
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45 | #define F_ALLOW_BLESSED 0x00000400UL |
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46 | #define F_CONV_BLESSED 0x00000800UL |
17 | #define F_MAXDEPTH 0xf8000000UL |
47 | #define F_RELAXED 0x00001000UL |
18 | #define S_MAXDEPTH 27 |
48 | #define F_ALLOW_UNKNOWN 0x00002000UL |
19 | |
49 | #define F_ALLOW_TAGS 0x00004000UL |
20 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
50 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
21 | |
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22 | // F_SELFCONVERT? <=> to_json/toJson |
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23 | // F_BLESSED? <=> { $__class__$ => } |
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24 | |
51 | |
25 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
52 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
26 | #define F_DEFAULT (13UL << S_MAXDEPTH) |
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27 | |
53 | |
28 | #define INIT_SIZE 32 // initial scalar size to be allocated |
54 | #define INIT_SIZE 32 // initial scalar size to be allocated |
29 | #define INDENT_STEP 3 // spaces per indentation level |
55 | #define INDENT_STEP 3 // spaces per indentation level |
30 | |
56 | |
31 | #define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character |
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32 | #define SHORT_STRING_LEN 512 // special-case strings of up to this size |
57 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
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58 | |
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59 | #define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8) |
33 | |
60 | |
34 | #define SB do { |
61 | #define SB do { |
35 | #define SE } while (0) |
62 | #define SE } while (0) |
36 | |
63 | |
37 | static HV *json_stash; // JSON::XS:: |
64 | #if __GNUC__ >= 3 |
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65 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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66 | # define INLINE static inline |
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67 | #else |
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68 | # define expect(expr,value) (expr) |
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69 | # define INLINE static |
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70 | #endif |
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71 | |
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72 | #define expect_false(expr) expect ((expr) != 0, 0) |
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73 | #define expect_true(expr) expect ((expr) != 0, 1) |
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74 | |
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75 | #define IN_RANGE_INC(type,val,beg,end) \ |
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76 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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77 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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78 | |
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79 | #define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
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80 | |
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81 | #ifdef USE_ITHREADS |
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82 | # define JSON_SLOW 1 |
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83 | # define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) |
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84 | # define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1)) |
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85 | #else |
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86 | # define JSON_SLOW 0 |
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87 | # define JSON_STASH json_stash |
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88 | # define BOOL_STASH bool_stash |
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89 | #endif |
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90 | |
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91 | // the amount of HEs to allocate on the stack, when sorting keys |
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92 | #define STACK_HES 64 |
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93 | |
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94 | static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean:: |
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95 | static SV *bool_true, *bool_false, *sv_json; |
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96 | |
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97 | enum { |
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98 | INCR_M_WS = 0, // initial whitespace skipping, must be 0 |
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99 | INCR_M_STR, // inside string |
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100 | INCR_M_BS, // inside backslash |
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101 | INCR_M_C0, // inside comment in initial whitespace sequence |
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102 | INCR_M_C1, // inside comment in other places |
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103 | INCR_M_JSON // outside anything, count nesting |
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104 | }; |
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105 | |
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106 | #define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON) |
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107 | |
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108 | typedef struct { |
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109 | U32 flags; |
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110 | U32 max_depth; |
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111 | STRLEN max_size; |
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112 | |
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113 | SV *cb_object; |
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114 | HV *cb_sk_object; |
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115 | |
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116 | // for the incremental parser |
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117 | SV *incr_text; // the source text so far |
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118 | STRLEN incr_pos; // the current offset into the text |
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119 | int incr_nest; // {[]}-nesting level |
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120 | unsigned char incr_mode; |
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121 | } JSON; |
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122 | |
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123 | INLINE void |
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124 | json_init (JSON *json) |
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125 | { |
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126 | Zero (json, 1, JSON); |
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127 | json->max_depth = 512; |
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128 | } |
38 | |
129 | |
39 | ///////////////////////////////////////////////////////////////////////////// |
130 | ///////////////////////////////////////////////////////////////////////////// |
40 | // utility functions |
131 | // utility functions |
41 | |
132 | |
42 | static UV * |
133 | INLINE SV * |
43 | SvJSON (SV *sv) |
134 | get_bool (const char *name) |
44 | { |
135 | { |
45 | if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
136 | SV *sv = get_sv (name, 1); |
46 | croak ("object is not of type JSON::XS"); |
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47 | |
137 | |
48 | return &SvUVX (SvRV (sv)); |
138 | SvREADONLY_on (sv); |
49 | } |
139 | SvREADONLY_on (SvRV (sv)); |
50 | |
140 | |
51 | static void |
141 | return sv; |
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142 | } |
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143 | |
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144 | INLINE void |
52 | shrink (SV *sv) |
145 | shrink (SV *sv) |
53 | { |
146 | { |
54 | sv_utf8_downgrade (sv, 1); |
147 | sv_utf8_downgrade (sv, 1); |
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148 | |
55 | if (SvLEN (sv) > SvCUR (sv) + 1) |
149 | if (SvLEN (sv) > SvCUR (sv) + 1) |
56 | { |
150 | { |
57 | #ifdef SvPV_shrink_to_cur |
151 | #ifdef SvPV_shrink_to_cur |
58 | SvPV_shrink_to_cur (sv); |
152 | SvPV_shrink_to_cur (sv); |
59 | #elif defined (SvPV_renew) |
153 | #elif defined (SvPV_renew) |
… | |
… | |
65 | // decode an utf-8 character and return it, or (UV)-1 in |
159 | // decode an utf-8 character and return it, or (UV)-1 in |
66 | // case of an error. |
160 | // case of an error. |
67 | // we special-case "safe" characters from U+80 .. U+7FF, |
161 | // we special-case "safe" characters from U+80 .. U+7FF, |
68 | // but use the very good perl function to parse anything else. |
162 | // but use the very good perl function to parse anything else. |
69 | // note that we never call this function for a ascii codepoints |
163 | // note that we never call this function for a ascii codepoints |
70 | static UV |
164 | INLINE UV |
71 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
165 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
72 | { |
166 | { |
73 | if (s[0] > 0xdf || s[0] < 0xc2) |
167 | if (expect_true (len >= 2 |
74 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
168 | && IN_RANGE_INC (char, s[0], 0xc2, 0xdf) |
75 | else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) |
169 | && IN_RANGE_INC (char, s[1], 0x80, 0xbf))) |
76 | { |
170 | { |
77 | *clen = 2; |
171 | *clen = 2; |
78 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
172 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
79 | } |
173 | } |
80 | else |
174 | else |
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175 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
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176 | } |
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177 | |
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178 | // likewise for encoding, also never called for ascii codepoints |
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179 | // this function takes advantage of this fact, although current gccs |
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180 | // seem to optimise the check for >= 0x80 away anyways |
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181 | INLINE unsigned char * |
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182 | encode_utf8 (unsigned char *s, UV ch) |
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183 | { |
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184 | if (expect_false (ch < 0x000080)) |
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185 | *s++ = ch; |
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186 | else if (expect_true (ch < 0x000800)) |
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187 | *s++ = 0xc0 | ( ch >> 6), |
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188 | *s++ = 0x80 | ( ch & 0x3f); |
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189 | else if ( ch < 0x010000) |
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190 | *s++ = 0xe0 | ( ch >> 12), |
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191 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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192 | *s++ = 0x80 | ( ch & 0x3f); |
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193 | else if ( ch < 0x110000) |
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194 | *s++ = 0xf0 | ( ch >> 18), |
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195 | *s++ = 0x80 | ((ch >> 12) & 0x3f), |
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196 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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197 | *s++ = 0x80 | ( ch & 0x3f); |
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198 | |
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199 | return s; |
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200 | } |
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201 | |
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202 | // convert offset pointer to character index, sv must be string |
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203 | static STRLEN |
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204 | ptr_to_index (SV *sv, char *offset) |
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205 | { |
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206 | return SvUTF8 (sv) |
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207 | ? utf8_distance (offset, SvPVX (sv)) |
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208 | : offset - SvPVX (sv); |
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209 | } |
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210 | |
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211 | ///////////////////////////////////////////////////////////////////////////// |
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212 | // fp hell |
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213 | |
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214 | // scan a group of digits, and a trailing exponent |
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215 | static void |
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216 | json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp, int maxdepth) |
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217 | { |
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218 | UV uaccum = 0; |
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219 | int eaccum = 0; |
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220 | |
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221 | // if we recurse too deep, skip all remaining digits |
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222 | // to avoid a stack overflow attack |
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223 | if (expect_false (--maxdepth <= 0)) |
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224 | while (((U8)*s - '0') < 10) |
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225 | ++s; |
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226 | |
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227 | for (;;) |
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228 | { |
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229 | U8 dig = (U8)*s - '0'; |
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230 | |
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231 | if (expect_false (dig >= 10)) |
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232 | { |
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233 | if (dig == (U8)((U8)'.' - (U8)'0')) |
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234 | { |
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235 | ++s; |
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236 | json_atof_scan1 (s, accum, expo, 1, maxdepth); |
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237 | } |
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238 | else if ((dig | ' ') == 'e' - '0') |
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239 | { |
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240 | int exp2 = 0; |
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241 | int neg = 0; |
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242 | |
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243 | ++s; |
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244 | |
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245 | if (*s == '-') |
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246 | { |
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247 | ++s; |
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248 | neg = 1; |
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249 | } |
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250 | else if (*s == '+') |
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251 | ++s; |
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252 | |
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253 | while ((dig = (U8)*s - '0') < 10) |
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254 | exp2 = exp2 * 10 + *s++ - '0'; |
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255 | |
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256 | *expo += neg ? -exp2 : exp2; |
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257 | } |
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258 | |
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259 | break; |
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260 | } |
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261 | |
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262 | ++s; |
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263 | |
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264 | uaccum = uaccum * 10 + dig; |
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265 | ++eaccum; |
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266 | |
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267 | // if we have too many digits, then recurse for more |
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268 | // we actually do this for rather few digits |
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269 | if (uaccum >= (UV_MAX - 9) / 10) |
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270 | { |
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271 | if (postdp) *expo -= eaccum; |
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272 | json_atof_scan1 (s, accum, expo, postdp, maxdepth); |
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273 | if (postdp) *expo += eaccum; |
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274 | |
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275 | break; |
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276 | } |
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277 | } |
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278 | |
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279 | // this relies greatly on the quality of the pow () |
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280 | // implementation of the platform, but a good |
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281 | // implementation is hard to beat. |
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282 | // (IEEE 754 conformant ones are required to be exact) |
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283 | if (postdp) *expo -= eaccum; |
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284 | *accum += uaccum * Perl_pow (10., *expo); |
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285 | *expo += eaccum; |
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286 | } |
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287 | |
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288 | static NV |
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289 | json_atof (const char *s) |
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290 | { |
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291 | NV accum = 0.; |
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292 | int expo = 0; |
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293 | int neg = 0; |
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294 | |
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295 | if (*s == '-') |
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296 | { |
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297 | ++s; |
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298 | neg = 1; |
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299 | } |
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300 | |
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301 | // a recursion depth of ten gives us >>500 bits |
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302 | json_atof_scan1 (s, &accum, &expo, 0, 10); |
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303 | |
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304 | return neg ? -accum : accum; |
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305 | } |
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306 | |
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307 | // target of scalar reference is bool? -1 == nope, 0 == false, 1 == true |
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308 | static int |
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309 | ref_bool_type (SV *sv) |
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310 | { |
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311 | svtype svt = SvTYPE (sv); |
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312 | |
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313 | if (svt < SVt_PVAV) |
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314 | { |
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315 | STRLEN len = 0; |
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316 | char *pv = svt ? SvPV (sv, len) : 0; |
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317 | |
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318 | if (len == 1) |
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319 | if (*pv == '1') |
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320 | return 1; |
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321 | else if (*pv == '0') |
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322 | return 0; |
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323 | |
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324 | } |
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325 | |
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326 | return -1; |
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327 | } |
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328 | |
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329 | // returns whether scalar is not a reference in the sense of allow_nonref |
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330 | static int |
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331 | json_nonref (SV *scalar) |
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332 | { |
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333 | if (!SvROK (scalar)) |
81 | return (UV)-1; |
334 | return 1; |
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335 | |
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336 | scalar = SvRV (scalar); |
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337 | |
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338 | if (SvSTASH (scalar) == bool_stash) |
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339 | return 1; |
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340 | |
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341 | if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0) |
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342 | return 1; |
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343 | |
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344 | return 0; |
82 | } |
345 | } |
83 | |
346 | |
84 | ///////////////////////////////////////////////////////////////////////////// |
347 | ///////////////////////////////////////////////////////////////////////////// |
85 | // encoder |
348 | // encoder |
86 | |
349 | |
… | |
… | |
88 | typedef struct |
351 | typedef struct |
89 | { |
352 | { |
90 | char *cur; // SvPVX (sv) + current output position |
353 | char *cur; // SvPVX (sv) + current output position |
91 | char *end; // SvEND (sv) |
354 | char *end; // SvEND (sv) |
92 | SV *sv; // result scalar |
355 | SV *sv; // result scalar |
93 | U32 flags; // F_* |
356 | JSON json; |
94 | U32 indent; // indentation level |
357 | U32 indent; // indentation level |
95 | U32 maxdepth; // max. indentation/recursion level |
358 | UV limit; // escape character values >= this value when encoding |
96 | } enc_t; |
359 | } enc_t; |
97 | |
360 | |
98 | static void |
361 | INLINE void |
99 | need (enc_t *enc, STRLEN len) |
362 | need (enc_t *enc, STRLEN len) |
100 | { |
363 | { |
101 | if (enc->cur + len >= enc->end) |
364 | if (expect_false (enc->cur + len >= enc->end)) |
102 | { |
365 | { |
103 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
366 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
104 | SvGROW (enc->sv, cur + len + 1); |
367 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
105 | enc->cur = SvPVX (enc->sv) + cur; |
368 | enc->cur = SvPVX (enc->sv) + cur; |
106 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv); |
369 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
107 | } |
370 | } |
108 | } |
371 | } |
109 | |
372 | |
110 | static void |
373 | INLINE void |
111 | encode_ch (enc_t *enc, char ch) |
374 | encode_ch (enc_t *enc, char ch) |
112 | { |
375 | { |
113 | need (enc, 1); |
376 | need (enc, 1); |
114 | *enc->cur++ = ch; |
377 | *enc->cur++ = ch; |
115 | } |
378 | } |
… | |
… | |
123 | |
386 | |
124 | while (str < end) |
387 | while (str < end) |
125 | { |
388 | { |
126 | unsigned char ch = *(unsigned char *)str; |
389 | unsigned char ch = *(unsigned char *)str; |
127 | |
390 | |
128 | if (ch >= 0x20 && ch < 0x80) // most common case |
391 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
129 | { |
392 | { |
130 | if (ch == '"') // but with slow exceptions |
393 | if (expect_false (ch == '"')) // but with slow exceptions |
131 | { |
394 | { |
132 | need (enc, len += 1); |
395 | need (enc, len += 1); |
133 | *enc->cur++ = '\\'; |
396 | *enc->cur++ = '\\'; |
134 | *enc->cur++ = '"'; |
397 | *enc->cur++ = '"'; |
135 | } |
398 | } |
136 | else if (ch == '\\') |
399 | else if (expect_false (ch == '\\')) |
137 | { |
400 | { |
138 | need (enc, len += 1); |
401 | need (enc, len += 1); |
139 | *enc->cur++ = '\\'; |
402 | *enc->cur++ = '\\'; |
140 | *enc->cur++ = '\\'; |
403 | *enc->cur++ = '\\'; |
141 | } |
404 | } |
… | |
… | |
159 | STRLEN clen; |
422 | STRLEN clen; |
160 | UV uch; |
423 | UV uch; |
161 | |
424 | |
162 | if (is_utf8) |
425 | if (is_utf8) |
163 | { |
426 | { |
164 | //uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
|
|
165 | uch = decode_utf8 (str, end - str, &clen); |
427 | uch = decode_utf8 (str, end - str, &clen); |
166 | if (clen == (STRLEN)-1) |
428 | if (clen == (STRLEN)-1) |
167 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
429 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
168 | } |
430 | } |
169 | else |
431 | else |
170 | { |
432 | { |
171 | uch = ch; |
433 | uch = ch; |
172 | clen = 1; |
434 | clen = 1; |
173 | } |
435 | } |
174 | |
436 | |
175 | if (uch > 0x10FFFFUL) |
437 | if (uch < 0x80/*0x20*/ || uch >= enc->limit) |
176 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
177 | |
|
|
178 | if (uch < 0x80 || enc->flags & F_ASCII) |
|
|
179 | { |
438 | { |
180 | if (uch > 0xFFFFUL) |
439 | if (uch >= 0x10000UL) |
181 | { |
440 | { |
|
|
441 | if (uch >= 0x110000UL) |
|
|
442 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
443 | |
182 | need (enc, len += 11); |
444 | need (enc, len += 11); |
183 | sprintf (enc->cur, "\\u%04x\\u%04x", |
445 | sprintf (enc->cur, "\\u%04x\\u%04x", |
184 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
446 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
185 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
447 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
186 | enc->cur += 12; |
448 | enc->cur += 12; |
187 | } |
449 | } |
188 | else |
450 | else |
189 | { |
451 | { |
190 | static char hexdigit [16] = "0123456789abcdef"; |
|
|
191 | need (enc, len += 5); |
452 | need (enc, len += 5); |
192 | *enc->cur++ = '\\'; |
453 | *enc->cur++ = '\\'; |
193 | *enc->cur++ = 'u'; |
454 | *enc->cur++ = 'u'; |
194 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
455 | *enc->cur++ = PL_hexdigit [ uch >> 12 ]; |
195 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
456 | *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; |
196 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
457 | *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; |
197 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
458 | *enc->cur++ = PL_hexdigit [(uch >> 0) & 15]; |
198 | } |
459 | } |
199 | |
460 | |
|
|
461 | str += clen; |
|
|
462 | } |
|
|
463 | else if (enc->json.flags & F_LATIN1) |
|
|
464 | { |
|
|
465 | *enc->cur++ = uch; |
200 | str += clen; |
466 | str += clen; |
201 | } |
467 | } |
202 | else if (is_utf8) |
468 | else if (is_utf8) |
203 | { |
469 | { |
204 | need (enc, len += clen); |
470 | need (enc, len += clen); |
… | |
… | |
208 | } |
474 | } |
209 | while (--clen); |
475 | while (--clen); |
210 | } |
476 | } |
211 | else |
477 | else |
212 | { |
478 | { |
213 | need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed |
479 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
214 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
480 | enc->cur = encode_utf8 (enc->cur, uch); |
215 | ++str; |
481 | ++str; |
216 | } |
482 | } |
217 | } |
483 | } |
218 | } |
484 | } |
219 | } |
485 | } |
220 | |
486 | |
221 | --len; |
487 | --len; |
222 | } |
488 | } |
223 | } |
489 | } |
224 | |
490 | |
225 | static void |
491 | INLINE void |
226 | encode_indent (enc_t *enc) |
492 | encode_indent (enc_t *enc) |
227 | { |
493 | { |
228 | if (enc->flags & F_INDENT) |
494 | if (enc->json.flags & F_INDENT) |
229 | { |
495 | { |
230 | int spaces = enc->indent * INDENT_STEP; |
496 | int spaces = enc->indent * INDENT_STEP; |
231 | |
497 | |
232 | need (enc, spaces); |
498 | need (enc, spaces); |
233 | memset (enc->cur, ' ', spaces); |
499 | memset (enc->cur, ' ', spaces); |
234 | enc->cur += spaces; |
500 | enc->cur += spaces; |
235 | } |
501 | } |
236 | } |
502 | } |
237 | |
503 | |
238 | static void |
504 | INLINE void |
239 | encode_space (enc_t *enc) |
505 | encode_space (enc_t *enc) |
240 | { |
506 | { |
241 | need (enc, 1); |
507 | need (enc, 1); |
242 | encode_ch (enc, ' '); |
508 | encode_ch (enc, ' '); |
243 | } |
509 | } |
244 | |
510 | |
245 | static void |
511 | INLINE void |
246 | encode_nl (enc_t *enc) |
512 | encode_nl (enc_t *enc) |
247 | { |
513 | { |
248 | if (enc->flags & F_INDENT) |
514 | if (enc->json.flags & F_INDENT) |
249 | { |
515 | { |
250 | need (enc, 1); |
516 | need (enc, 1); |
251 | encode_ch (enc, '\n'); |
517 | encode_ch (enc, '\n'); |
252 | } |
518 | } |
253 | } |
519 | } |
254 | |
520 | |
255 | static void |
521 | INLINE void |
256 | encode_comma (enc_t *enc) |
522 | encode_comma (enc_t *enc) |
257 | { |
523 | { |
258 | encode_ch (enc, ','); |
524 | encode_ch (enc, ','); |
259 | |
525 | |
260 | if (enc->flags & F_INDENT) |
526 | if (enc->json.flags & F_INDENT) |
261 | encode_nl (enc); |
527 | encode_nl (enc); |
262 | else if (enc->flags & F_SPACE_AFTER) |
528 | else if (enc->json.flags & F_SPACE_AFTER) |
263 | encode_space (enc); |
529 | encode_space (enc); |
264 | } |
530 | } |
265 | |
531 | |
266 | static void encode_sv (enc_t *enc, SV *sv); |
532 | static void encode_sv (enc_t *enc, SV *sv); |
267 | |
533 | |
268 | static void |
534 | static void |
269 | encode_av (enc_t *enc, AV *av) |
535 | encode_av (enc_t *enc, AV *av) |
270 | { |
536 | { |
271 | int i, len = av_len (av); |
537 | int i, len = av_len (av); |
272 | |
538 | |
273 | encode_ch (enc, '['); encode_nl (enc); |
539 | if (enc->indent >= enc->json.max_depth) |
274 | ++enc->indent; |
540 | croak (ERR_NESTING_EXCEEDED); |
275 | |
541 | |
|
|
542 | encode_ch (enc, '['); |
|
|
543 | |
|
|
544 | if (len >= 0) |
|
|
545 | { |
|
|
546 | encode_nl (enc); ++enc->indent; |
|
|
547 | |
276 | for (i = 0; i <= len; ++i) |
548 | for (i = 0; i <= len; ++i) |
277 | { |
549 | { |
|
|
550 | SV **svp = av_fetch (av, i, 0); |
|
|
551 | |
278 | encode_indent (enc); |
552 | encode_indent (enc); |
279 | encode_sv (enc, *av_fetch (av, i, 0)); |
|
|
280 | |
553 | |
|
|
554 | if (svp) |
|
|
555 | encode_sv (enc, *svp); |
|
|
556 | else |
|
|
557 | encode_str (enc, "null", 4, 0); |
|
|
558 | |
281 | if (i < len) |
559 | if (i < len) |
282 | encode_comma (enc); |
560 | encode_comma (enc); |
283 | } |
561 | } |
284 | |
562 | |
|
|
563 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
564 | } |
|
|
565 | |
285 | encode_nl (enc); |
566 | encode_ch (enc, ']'); |
286 | |
|
|
287 | --enc->indent; |
|
|
288 | encode_indent (enc); encode_ch (enc, ']'); |
|
|
289 | } |
567 | } |
290 | |
568 | |
291 | static void |
569 | static void |
292 | encode_he (enc_t *enc, HE *he) |
570 | encode_hk (enc_t *enc, HE *he) |
293 | { |
571 | { |
294 | encode_ch (enc, '"'); |
572 | encode_ch (enc, '"'); |
295 | |
573 | |
296 | if (HeKLEN (he) == HEf_SVKEY) |
574 | if (HeKLEN (he) == HEf_SVKEY) |
297 | { |
575 | { |
298 | SV *sv = HeSVKEY (he); |
576 | SV *sv = HeSVKEY (he); |
299 | STRLEN len; |
577 | STRLEN len; |
300 | char *str; |
578 | char *str; |
301 | |
579 | |
302 | SvGETMAGIC (sv); |
580 | SvGETMAGIC (sv); |
303 | str = SvPV (sv, len); |
581 | str = SvPV (sv, len); |
304 | |
582 | |
305 | encode_str (enc, str, len, SvUTF8 (sv)); |
583 | encode_str (enc, str, len, SvUTF8 (sv)); |
306 | } |
584 | } |
307 | else |
585 | else |
308 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
586 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
309 | |
587 | |
310 | encode_ch (enc, '"'); |
588 | encode_ch (enc, '"'); |
311 | |
589 | |
312 | if (enc->flags & F_SPACE_BEFORE) encode_space (enc); |
590 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
313 | encode_ch (enc, ':'); |
591 | encode_ch (enc, ':'); |
314 | if (enc->flags & F_SPACE_AFTER ) encode_space (enc); |
592 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
315 | encode_sv (enc, HeVAL (he)); |
|
|
316 | } |
593 | } |
317 | |
594 | |
318 | // compare hash entries, used when all keys are bytestrings |
595 | // compare hash entries, used when all keys are bytestrings |
319 | static int |
596 | static int |
320 | he_cmp_fast (const void *a_, const void *b_) |
597 | he_cmp_fast (const void *a_, const void *b_) |
… | |
… | |
325 | HE *b = *(HE **)b_; |
602 | HE *b = *(HE **)b_; |
326 | |
603 | |
327 | STRLEN la = HeKLEN (a); |
604 | STRLEN la = HeKLEN (a); |
328 | STRLEN lb = HeKLEN (b); |
605 | STRLEN lb = HeKLEN (b); |
329 | |
606 | |
330 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
607 | if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la))) |
331 | cmp = la - lb; |
608 | cmp = lb - la; |
332 | |
609 | |
333 | return cmp; |
610 | return cmp; |
334 | } |
611 | } |
335 | |
612 | |
336 | // compare hash entries, used when some keys are sv's or utf-x |
613 | // compare hash entries, used when some keys are sv's or utf-x |
337 | static int |
614 | static int |
338 | he_cmp_slow (const void *a, const void *b) |
615 | he_cmp_slow (const void *a, const void *b) |
339 | { |
616 | { |
340 | return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
617 | return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a)); |
341 | } |
618 | } |
342 | |
619 | |
343 | static void |
620 | static void |
344 | encode_hv (enc_t *enc, HV *hv) |
621 | encode_hv (enc_t *enc, HV *hv) |
345 | { |
622 | { |
346 | int count, i; |
623 | HE *he; |
347 | |
624 | |
348 | encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
625 | if (enc->indent >= enc->json.max_depth) |
|
|
626 | croak (ERR_NESTING_EXCEEDED); |
349 | |
627 | |
350 | if ((count = hv_iterinit (hv))) |
628 | encode_ch (enc, '{'); |
351 | { |
629 | |
352 | // for canonical output we have to sort by keys first |
630 | // for canonical output we have to sort by keys first |
353 | // actually, this is mostly due to the stupid so-called |
631 | // actually, this is mostly due to the stupid so-called |
354 | // security workaround added somewhere in 5.8.x. |
632 | // security workaround added somewhere in 5.8.x |
355 | // that randomises hash orderings |
633 | // that randomises hash orderings |
356 | if (enc->flags & F_CANONICAL) |
634 | if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv)) |
|
|
635 | { |
|
|
636 | int count = hv_iterinit (hv); |
|
|
637 | |
|
|
638 | if (SvMAGICAL (hv)) |
357 | { |
639 | { |
358 | HE *he, *hes [count]; // if your compiler dies here, you need to enable C99 mode |
640 | // need to count by iterating. could improve by dynamically building the vector below |
|
|
641 | // but I don't care for the speed of this special case. |
|
|
642 | // note also that we will run into undefined behaviour when the two iterations |
|
|
643 | // do not result in the same count, something I might care for in some later release. |
|
|
644 | |
|
|
645 | count = 0; |
|
|
646 | while (hv_iternext (hv)) |
|
|
647 | ++count; |
|
|
648 | |
|
|
649 | hv_iterinit (hv); |
|
|
650 | } |
|
|
651 | |
|
|
652 | if (count) |
|
|
653 | { |
359 | int fast = 1; |
654 | int i, fast = 1; |
|
|
655 | HE *hes_stack [STACK_HES]; |
|
|
656 | HE **hes = hes_stack; |
|
|
657 | |
|
|
658 | // allocate larger arrays on the heap |
|
|
659 | if (count > STACK_HES) |
|
|
660 | { |
|
|
661 | SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes))); |
|
|
662 | hes = (HE **)SvPVX (sv); |
|
|
663 | } |
360 | |
664 | |
361 | i = 0; |
665 | i = 0; |
362 | while ((he = hv_iternext (hv))) |
666 | while ((he = hv_iternext (hv))) |
363 | { |
667 | { |
364 | hes [i++] = he; |
668 | hes [i++] = he; |
… | |
… | |
386 | |
690 | |
387 | FREETMPS; |
691 | FREETMPS; |
388 | LEAVE; |
692 | LEAVE; |
389 | } |
693 | } |
390 | |
694 | |
391 | for (i = 0; i < count; ++i) |
695 | encode_nl (enc); ++enc->indent; |
|
|
696 | |
|
|
697 | while (count--) |
392 | { |
698 | { |
393 | encode_indent (enc); |
699 | encode_indent (enc); |
|
|
700 | he = hes [count]; |
394 | encode_he (enc, hes [i]); |
701 | encode_hk (enc, he); |
|
|
702 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
395 | |
703 | |
396 | if (i < count - 1) |
704 | if (count) |
397 | encode_comma (enc); |
705 | encode_comma (enc); |
398 | } |
706 | } |
399 | |
707 | |
400 | encode_nl (enc); |
708 | encode_nl (enc); --enc->indent; encode_indent (enc); |
401 | } |
709 | } |
|
|
710 | } |
|
|
711 | else |
|
|
712 | { |
|
|
713 | if (hv_iterinit (hv) || SvMAGICAL (hv)) |
|
|
714 | if ((he = hv_iternext (hv))) |
|
|
715 | { |
|
|
716 | encode_nl (enc); ++enc->indent; |
|
|
717 | |
|
|
718 | for (;;) |
|
|
719 | { |
|
|
720 | encode_indent (enc); |
|
|
721 | encode_hk (enc, he); |
|
|
722 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
|
|
723 | |
|
|
724 | if (!(he = hv_iternext (hv))) |
|
|
725 | break; |
|
|
726 | |
|
|
727 | encode_comma (enc); |
|
|
728 | } |
|
|
729 | |
|
|
730 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
731 | } |
|
|
732 | } |
|
|
733 | |
|
|
734 | encode_ch (enc, '}'); |
|
|
735 | } |
|
|
736 | |
|
|
737 | // encode objects, arrays and special \0=false and \1=true values. |
|
|
738 | static void |
|
|
739 | encode_rv (enc_t *enc, SV *sv) |
|
|
740 | { |
|
|
741 | svtype svt; |
|
|
742 | GV *method; |
|
|
743 | |
|
|
744 | SvGETMAGIC (sv); |
|
|
745 | svt = SvTYPE (sv); |
|
|
746 | |
|
|
747 | if (expect_false (SvOBJECT (sv))) |
|
|
748 | { |
|
|
749 | HV *stash = SvSTASH (sv); |
|
|
750 | |
|
|
751 | if (stash == bool_stash) |
|
|
752 | { |
|
|
753 | if (SvIV (sv)) |
|
|
754 | encode_str (enc, "true", 4, 0); |
|
|
755 | else |
|
|
756 | encode_str (enc, "false", 5, 0); |
|
|
757 | } |
|
|
758 | else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0))) |
|
|
759 | { |
|
|
760 | int count; |
|
|
761 | dSP; |
|
|
762 | |
|
|
763 | ENTER; SAVETMPS; |
|
|
764 | SAVESTACK_POS (); |
|
|
765 | PUSHMARK (SP); |
|
|
766 | EXTEND (SP, 2); |
|
|
767 | // we re-bless the reference to get overload and other niceties right |
|
|
768 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
769 | PUSHs (sv_json); |
|
|
770 | |
|
|
771 | PUTBACK; |
|
|
772 | count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
773 | SPAGAIN; |
|
|
774 | |
|
|
775 | // catch this surprisingly common error |
|
|
776 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
777 | croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
778 | |
|
|
779 | encode_ch (enc, '('); |
|
|
780 | encode_ch (enc, '"'); |
|
|
781 | encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash)); |
|
|
782 | encode_ch (enc, '"'); |
|
|
783 | encode_ch (enc, ')'); |
|
|
784 | encode_ch (enc, '['); |
|
|
785 | |
|
|
786 | while (count) |
|
|
787 | { |
|
|
788 | encode_sv (enc, SP[1 - count--]); |
|
|
789 | |
|
|
790 | if (count) |
|
|
791 | encode_ch (enc, ','); |
|
|
792 | } |
|
|
793 | |
|
|
794 | encode_ch (enc, ']'); |
|
|
795 | |
|
|
796 | FREETMPS; LEAVE; |
|
|
797 | } |
|
|
798 | else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0))) |
|
|
799 | { |
|
|
800 | dSP; |
|
|
801 | |
|
|
802 | ENTER; SAVETMPS; |
|
|
803 | PUSHMARK (SP); |
|
|
804 | // we re-bless the reference to get overload and other niceties right |
|
|
805 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
806 | |
|
|
807 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
808 | PUTBACK; |
|
|
809 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
810 | SPAGAIN; |
|
|
811 | |
|
|
812 | // catch this surprisingly common error |
|
|
813 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
814 | croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
815 | |
|
|
816 | sv = POPs; |
|
|
817 | PUTBACK; |
|
|
818 | |
|
|
819 | encode_sv (enc, sv); |
|
|
820 | |
|
|
821 | FREETMPS; LEAVE; |
|
|
822 | } |
|
|
823 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
824 | encode_str (enc, "null", 4, 0); |
402 | else |
825 | else |
403 | { |
826 | croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)", |
404 | SV *sv; |
827 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
405 | HE *he = hv_iternext (hv); |
828 | } |
406 | |
829 | else if (svt == SVt_PVHV) |
407 | for (;;) |
830 | encode_hv (enc, (HV *)sv); |
408 | { |
831 | else if (svt == SVt_PVAV) |
409 | encode_indent (enc); |
832 | encode_av (enc, (AV *)sv); |
410 | encode_he (enc, he); |
833 | else if (svt < SVt_PVAV) |
411 | |
|
|
412 | if (!(he = hv_iternext (hv))) |
|
|
413 | break; |
|
|
414 | |
|
|
415 | encode_comma (enc); |
|
|
416 | } |
|
|
417 | |
|
|
418 | encode_nl (enc); |
|
|
419 | } |
|
|
420 | } |
834 | { |
|
|
835 | int bool_type = ref_bool_type (sv); |
421 | |
836 | |
422 | --enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
837 | if (bool_type == 1) |
|
|
838 | encode_str (enc, "true", 4, 0); |
|
|
839 | else if (bool_type == 0) |
|
|
840 | encode_str (enc, "false", 5, 0); |
|
|
841 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
842 | encode_str (enc, "null", 4, 0); |
|
|
843 | else |
|
|
844 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
845 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
846 | } |
|
|
847 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
848 | encode_str (enc, "null", 4, 0); |
|
|
849 | else |
|
|
850 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
851 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
423 | } |
852 | } |
424 | |
853 | |
425 | static void |
854 | static void |
426 | encode_sv (enc_t *enc, SV *sv) |
855 | encode_sv (enc_t *enc, SV *sv) |
427 | { |
856 | { |
… | |
… | |
435 | encode_str (enc, str, len, SvUTF8 (sv)); |
864 | encode_str (enc, str, len, SvUTF8 (sv)); |
436 | encode_ch (enc, '"'); |
865 | encode_ch (enc, '"'); |
437 | } |
866 | } |
438 | else if (SvNOKp (sv)) |
867 | else if (SvNOKp (sv)) |
439 | { |
868 | { |
|
|
869 | // trust that perl will do the right thing w.r.t. JSON syntax. |
440 | need (enc, NV_DIG + 32); |
870 | need (enc, NV_DIG + 32); |
441 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
871 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
442 | enc->cur += strlen (enc->cur); |
872 | enc->cur += strlen (enc->cur); |
443 | } |
873 | } |
444 | else if (SvIOKp (sv)) |
874 | else if (SvIOKp (sv)) |
445 | { |
875 | { |
|
|
876 | // we assume we can always read an IV as a UV and vice versa |
|
|
877 | // we assume two's complement |
|
|
878 | // we assume no aliasing issues in the union |
|
|
879 | if (SvIsUV (sv) ? SvUVX (sv) <= 59000 |
|
|
880 | : SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000) |
|
|
881 | { |
|
|
882 | // optimise the "small number case" |
|
|
883 | // code will likely be branchless and use only a single multiplication |
|
|
884 | // works for numbers up to 59074 |
|
|
885 | I32 i = SvIVX (sv); |
|
|
886 | U32 u; |
|
|
887 | char digit, nz = 0; |
|
|
888 | |
446 | need (enc, 64); |
889 | need (enc, 6); |
|
|
890 | |
|
|
891 | *enc->cur = '-'; enc->cur += i < 0 ? 1 : 0; |
|
|
892 | u = i < 0 ? -i : i; |
|
|
893 | |
|
|
894 | // convert to 4.28 fixed-point representation |
|
|
895 | u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits |
|
|
896 | |
|
|
897 | // now output digit by digit, each time masking out the integer part |
|
|
898 | // and multiplying by 5 while moving the decimal point one to the right, |
|
|
899 | // resulting in a net multiplication by 10. |
|
|
900 | // we always write the digit to memory but conditionally increment |
|
|
901 | // the pointer, to enable the use of conditional move instructions. |
|
|
902 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffffUL) * 5; |
|
|
903 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffffUL) * 5; |
|
|
904 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffffUL) * 5; |
|
|
905 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffffUL) * 5; |
|
|
906 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
|
|
907 | } |
|
|
908 | else |
|
|
909 | { |
|
|
910 | // large integer, use the (rather slow) snprintf way. |
|
|
911 | need (enc, IVUV_MAXCHARS); |
447 | enc->cur += |
912 | enc->cur += |
448 | SvIsUV(sv) |
913 | SvIsUV(sv) |
449 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
914 | ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) |
450 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
915 | : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); |
|
|
916 | } |
451 | } |
917 | } |
452 | else if (SvROK (sv)) |
918 | else if (SvROK (sv)) |
453 | { |
919 | encode_rv (enc, SvRV (sv)); |
454 | SV *rv = SvRV (sv); |
920 | else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) |
455 | |
|
|
456 | if (enc->indent >= enc->maxdepth) |
|
|
457 | croak ("data structure too deep (hit recursion limit)"); |
|
|
458 | |
|
|
459 | switch (SvTYPE (rv)) |
|
|
460 | { |
|
|
461 | case SVt_PVAV: encode_av (enc, (AV *)rv); break; |
|
|
462 | case SVt_PVHV: encode_hv (enc, (HV *)rv); break; |
|
|
463 | |
|
|
464 | default: |
|
|
465 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
466 | SvPV_nolen (sv)); |
|
|
467 | } |
|
|
468 | } |
|
|
469 | else if (!SvOK (sv)) |
|
|
470 | encode_str (enc, "null", 4, 0); |
921 | encode_str (enc, "null", 4, 0); |
471 | else |
922 | else |
472 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
923 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data", |
473 | SvPV_nolen (sv), SvFLAGS (sv)); |
924 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
474 | } |
925 | } |
475 | |
926 | |
476 | static SV * |
927 | static SV * |
477 | encode_json (SV *scalar, U32 flags) |
928 | encode_json (SV *scalar, JSON *json) |
478 | { |
929 | { |
|
|
930 | enc_t enc; |
|
|
931 | |
479 | if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
932 | if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar)) |
480 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
933 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
481 | |
934 | |
482 | enc_t enc; |
935 | enc.json = *json; |
483 | enc.flags = flags; |
|
|
484 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
936 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
485 | enc.cur = SvPVX (enc.sv); |
937 | enc.cur = SvPVX (enc.sv); |
486 | enc.end = SvEND (enc.sv); |
938 | enc.end = SvEND (enc.sv); |
487 | enc.indent = 0; |
939 | enc.indent = 0; |
488 | enc.maxdepth = DEC_DEPTH (flags); |
940 | enc.limit = enc.json.flags & F_ASCII ? 0x000080UL |
|
|
941 | : enc.json.flags & F_LATIN1 ? 0x000100UL |
|
|
942 | : 0x110000UL; |
489 | |
943 | |
490 | SvPOK_only (enc.sv); |
944 | SvPOK_only (enc.sv); |
491 | encode_sv (&enc, scalar); |
945 | encode_sv (&enc, scalar); |
|
|
946 | encode_nl (&enc); |
492 | |
947 | |
|
|
948 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
949 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
|
|
950 | |
493 | if (!(flags & (F_ASCII | F_UTF8))) |
951 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
494 | SvUTF8_on (enc.sv); |
952 | SvUTF8_on (enc.sv); |
495 | |
953 | |
496 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
497 | |
|
|
498 | if (enc.flags & F_SHRINK) |
954 | if (enc.json.flags & F_SHRINK) |
499 | shrink (enc.sv); |
955 | shrink (enc.sv); |
500 | |
956 | |
501 | return enc.sv; |
957 | return enc.sv; |
502 | } |
958 | } |
503 | |
959 | |
… | |
… | |
508 | typedef struct |
964 | typedef struct |
509 | { |
965 | { |
510 | char *cur; // current parser pointer |
966 | char *cur; // current parser pointer |
511 | char *end; // end of input string |
967 | char *end; // end of input string |
512 | const char *err; // parse error, if != 0 |
968 | const char *err; // parse error, if != 0 |
513 | U32 flags; // F_* |
969 | JSON json; |
514 | U32 depth; // recursion depth |
970 | U32 depth; // recursion depth |
515 | U32 maxdepth; // recursion depth limit |
971 | U32 maxdepth; // recursion depth limit |
516 | } dec_t; |
972 | } dec_t; |
517 | |
973 | |
518 | static void |
974 | INLINE void |
|
|
975 | decode_comment (dec_t *dec) |
|
|
976 | { |
|
|
977 | // only '#'-style comments allowed a.t.m. |
|
|
978 | |
|
|
979 | while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d) |
|
|
980 | ++dec->cur; |
|
|
981 | } |
|
|
982 | |
|
|
983 | INLINE void |
519 | decode_ws (dec_t *dec) |
984 | decode_ws (dec_t *dec) |
520 | { |
985 | { |
521 | for (;;) |
986 | for (;;) |
522 | { |
987 | { |
523 | char ch = *dec->cur; |
988 | char ch = *dec->cur; |
524 | |
989 | |
525 | if (ch > 0x20 |
990 | if (ch > 0x20) |
|
|
991 | { |
|
|
992 | if (expect_false (ch == '#')) |
|
|
993 | { |
|
|
994 | if (dec->json.flags & F_RELAXED) |
|
|
995 | decode_comment (dec); |
|
|
996 | else |
|
|
997 | break; |
|
|
998 | } |
|
|
999 | else |
|
|
1000 | break; |
|
|
1001 | } |
526 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
1002 | else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09) |
527 | break; |
1003 | break; // parse error, but let higher level handle it, gives better error messages |
528 | |
1004 | |
529 | ++dec->cur; |
1005 | ++dec->cur; |
530 | } |
1006 | } |
531 | } |
1007 | } |
532 | |
1008 | |
… | |
… | |
536 | if (*dec->cur != ch) \ |
1012 | if (*dec->cur != ch) \ |
537 | ERR (# ch " expected"); \ |
1013 | ERR (# ch " expected"); \ |
538 | ++dec->cur; \ |
1014 | ++dec->cur; \ |
539 | SE |
1015 | SE |
540 | |
1016 | |
541 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
1017 | #define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED) |
542 | #define DEC_DEC_DEPTH --dec->depth |
1018 | #define DEC_DEC_DEPTH --dec->depth |
543 | |
1019 | |
544 | static SV *decode_sv (dec_t *dec); |
1020 | static SV *decode_sv (dec_t *dec); |
545 | |
1021 | |
546 | static signed char decode_hexdigit[256]; |
1022 | static signed char decode_hexdigit[256]; |
… | |
… | |
549 | decode_4hex (dec_t *dec) |
1025 | decode_4hex (dec_t *dec) |
550 | { |
1026 | { |
551 | signed char d1, d2, d3, d4; |
1027 | signed char d1, d2, d3, d4; |
552 | unsigned char *cur = (unsigned char *)dec->cur; |
1028 | unsigned char *cur = (unsigned char *)dec->cur; |
553 | |
1029 | |
554 | d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected"); |
1030 | d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected"); |
555 | d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected"); |
1031 | d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected"); |
556 | d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected"); |
1032 | d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected"); |
557 | d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected"); |
1033 | d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected"); |
558 | |
1034 | |
559 | dec->cur += 4; |
1035 | dec->cur += 4; |
560 | |
1036 | |
561 | return ((UV)d1) << 12 |
1037 | return ((UV)d1) << 12 |
562 | | ((UV)d2) << 8 |
1038 | | ((UV)d2) << 8 |
… | |
… | |
570 | static SV * |
1046 | static SV * |
571 | decode_str (dec_t *dec) |
1047 | decode_str (dec_t *dec) |
572 | { |
1048 | { |
573 | SV *sv = 0; |
1049 | SV *sv = 0; |
574 | int utf8 = 0; |
1050 | int utf8 = 0; |
|
|
1051 | char *dec_cur = dec->cur; |
575 | |
1052 | |
576 | do |
1053 | do |
577 | { |
1054 | { |
578 | char buf [SHORT_STRING_LEN + UTF8_MAX_LEN]; |
1055 | char buf [SHORT_STRING_LEN + UTF8_MAXBYTES]; |
579 | char *cur = buf; |
1056 | char *cur = buf; |
580 | |
1057 | |
581 | do |
1058 | do |
582 | { |
1059 | { |
583 | unsigned char ch = *(unsigned char *)dec->cur++; |
1060 | unsigned char ch = *(unsigned char *)dec_cur++; |
584 | |
1061 | |
585 | if (ch == '"') |
1062 | if (expect_false (ch == '"')) |
586 | { |
1063 | { |
587 | --dec->cur; |
1064 | --dec_cur; |
588 | break; |
1065 | break; |
589 | } |
1066 | } |
590 | else if (ch == '\\') |
1067 | else if (expect_false (ch == '\\')) |
591 | { |
1068 | { |
592 | switch (*dec->cur) |
1069 | switch (*dec_cur) |
593 | { |
1070 | { |
594 | case '\\': |
1071 | case '\\': |
595 | case '/': |
1072 | case '/': |
596 | case '"': *cur++ = *dec->cur++; break; |
1073 | case '"': *cur++ = *dec_cur++; break; |
597 | |
1074 | |
598 | case 'b': ++dec->cur; *cur++ = '\010'; break; |
1075 | case 'b': ++dec_cur; *cur++ = '\010'; break; |
599 | case 't': ++dec->cur; *cur++ = '\011'; break; |
1076 | case 't': ++dec_cur; *cur++ = '\011'; break; |
600 | case 'n': ++dec->cur; *cur++ = '\012'; break; |
1077 | case 'n': ++dec_cur; *cur++ = '\012'; break; |
601 | case 'f': ++dec->cur; *cur++ = '\014'; break; |
1078 | case 'f': ++dec_cur; *cur++ = '\014'; break; |
602 | case 'r': ++dec->cur; *cur++ = '\015'; break; |
1079 | case 'r': ++dec_cur; *cur++ = '\015'; break; |
603 | |
1080 | |
604 | case 'u': |
1081 | case 'u': |
605 | { |
1082 | { |
606 | UV lo, hi; |
1083 | UV lo, hi; |
607 | ++dec->cur; |
1084 | ++dec_cur; |
608 | |
1085 | |
|
|
1086 | dec->cur = dec_cur; |
609 | hi = decode_4hex (dec); |
1087 | hi = decode_4hex (dec); |
|
|
1088 | dec_cur = dec->cur; |
610 | if (hi == (UV)-1) |
1089 | if (hi == (UV)-1) |
611 | goto fail; |
1090 | goto fail; |
612 | |
1091 | |
613 | // possibly a surrogate pair |
1092 | // possibly a surrogate pair |
614 | if (hi >= 0xd800) |
1093 | if (hi >= 0xd800) |
615 | if (hi < 0xdc00) |
1094 | if (hi < 0xdc00) |
616 | { |
1095 | { |
617 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
1096 | if (dec_cur [0] != '\\' || dec_cur [1] != 'u') |
618 | ERR ("missing low surrogate character in surrogate pair"); |
1097 | ERR ("missing low surrogate character in surrogate pair"); |
619 | |
1098 | |
620 | dec->cur += 2; |
1099 | dec_cur += 2; |
621 | |
1100 | |
|
|
1101 | dec->cur = dec_cur; |
622 | lo = decode_4hex (dec); |
1102 | lo = decode_4hex (dec); |
|
|
1103 | dec_cur = dec->cur; |
623 | if (lo == (UV)-1) |
1104 | if (lo == (UV)-1) |
624 | goto fail; |
1105 | goto fail; |
625 | |
1106 | |
626 | if (lo < 0xdc00 || lo >= 0xe000) |
1107 | if (lo < 0xdc00 || lo >= 0xe000) |
627 | ERR ("surrogate pair expected"); |
1108 | ERR ("surrogate pair expected"); |
… | |
… | |
633 | |
1114 | |
634 | if (hi >= 0x80) |
1115 | if (hi >= 0x80) |
635 | { |
1116 | { |
636 | utf8 = 1; |
1117 | utf8 = 1; |
637 | |
1118 | |
638 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
1119 | cur = encode_utf8 (cur, hi); |
639 | } |
1120 | } |
640 | else |
1121 | else |
641 | *cur++ = hi; |
1122 | *cur++ = hi; |
642 | } |
1123 | } |
643 | break; |
1124 | break; |
644 | |
1125 | |
645 | default: |
1126 | default: |
646 | --dec->cur; |
1127 | --dec_cur; |
647 | ERR ("illegal backslash escape sequence in string"); |
1128 | ERR ("illegal backslash escape sequence in string"); |
648 | } |
1129 | } |
649 | } |
1130 | } |
650 | else if (ch >= 0x20 && ch <= 0x7f) |
1131 | else if (expect_true (ch >= 0x20 && ch < 0x80)) |
651 | *cur++ = ch; |
1132 | *cur++ = ch; |
652 | else if (ch >= 0x80) |
1133 | else if (ch >= 0x80) |
653 | { |
1134 | { |
654 | --dec->cur; |
|
|
655 | |
|
|
656 | STRLEN clen; |
1135 | STRLEN clen; |
|
|
1136 | |
|
|
1137 | --dec_cur; |
|
|
1138 | |
657 | UV uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen); |
1139 | decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
658 | if (clen == (STRLEN)-1) |
1140 | if (clen == (STRLEN)-1) |
659 | ERR ("malformed UTF-8 character in JSON string"); |
1141 | ERR ("malformed UTF-8 character in JSON string"); |
660 | |
1142 | |
661 | do |
1143 | do |
662 | { |
|
|
663 | *cur++ = *dec->cur++; |
1144 | *cur++ = *dec_cur++; |
664 | } |
|
|
665 | while (--clen); |
1145 | while (--clen); |
666 | |
1146 | |
667 | utf8 = 1; |
1147 | utf8 = 1; |
668 | } |
1148 | } |
669 | else if (!ch) |
1149 | else if (ch == '\t' && dec->json.flags & F_RELAXED) |
670 | ERR ("unexpected end of string while parsing json string"); |
1150 | *cur++ = ch; |
671 | else |
1151 | else |
|
|
1152 | { |
|
|
1153 | --dec_cur; |
|
|
1154 | |
|
|
1155 | if (!ch) |
|
|
1156 | ERR ("unexpected end of string while parsing JSON string"); |
|
|
1157 | else |
672 | ERR ("invalid character encountered"); |
1158 | ERR ("invalid character encountered while parsing JSON string"); |
673 | |
1159 | } |
674 | } |
1160 | } |
675 | while (cur < buf + SHORT_STRING_LEN); |
1161 | while (cur < buf + SHORT_STRING_LEN); |
676 | |
1162 | |
|
|
1163 | { |
677 | STRLEN len = cur - buf; |
1164 | STRLEN len = cur - buf; |
678 | |
1165 | |
679 | if (sv) |
1166 | if (sv) |
680 | { |
1167 | { |
681 | SvGROW (sv, SvCUR (sv) + len + 1); |
1168 | STRLEN cur = SvCUR (sv); |
|
|
1169 | |
|
|
1170 | if (SvLEN (sv) <= cur + len) |
|
|
1171 | SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
|
|
1172 | |
682 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
1173 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
683 | SvCUR_set (sv, SvCUR (sv) + len); |
1174 | SvCUR_set (sv, SvCUR (sv) + len); |
684 | } |
1175 | } |
685 | else |
1176 | else |
686 | sv = newSVpvn (buf, len); |
1177 | sv = newSVpvn (buf, len); |
687 | } |
1178 | } |
|
|
1179 | } |
688 | while (*dec->cur != '"'); |
1180 | while (*dec_cur != '"'); |
689 | |
1181 | |
690 | ++dec->cur; |
1182 | ++dec_cur; |
691 | |
1183 | |
692 | if (sv) |
1184 | if (sv) |
693 | { |
1185 | { |
694 | SvPOK_only (sv); |
1186 | SvPOK_only (sv); |
695 | *SvEND (sv) = 0; |
1187 | *SvEND (sv) = 0; |
… | |
… | |
698 | SvUTF8_on (sv); |
1190 | SvUTF8_on (sv); |
699 | } |
1191 | } |
700 | else |
1192 | else |
701 | sv = newSVpvn ("", 0); |
1193 | sv = newSVpvn ("", 0); |
702 | |
1194 | |
|
|
1195 | dec->cur = dec_cur; |
703 | return sv; |
1196 | return sv; |
704 | |
1197 | |
705 | fail: |
1198 | fail: |
|
|
1199 | dec->cur = dec_cur; |
706 | return 0; |
1200 | return 0; |
707 | } |
1201 | } |
708 | |
1202 | |
709 | static SV * |
1203 | static SV * |
710 | decode_num (dec_t *dec) |
1204 | decode_num (dec_t *dec) |
… | |
… | |
768 | is_nv = 1; |
1262 | is_nv = 1; |
769 | } |
1263 | } |
770 | |
1264 | |
771 | if (!is_nv) |
1265 | if (!is_nv) |
772 | { |
1266 | { |
773 | UV uv; |
1267 | int len = dec->cur - start; |
774 | int numtype = grok_number (start, dec->cur - start, &uv); |
1268 | |
775 | if (numtype & IS_NUMBER_IN_UV) |
1269 | // special case the rather common 1..5-digit-int case |
776 | if (numtype & IS_NUMBER_NEG) |
1270 | if (*start == '-') |
|
|
1271 | switch (len) |
777 | { |
1272 | { |
778 | if (uv < (UV)IV_MIN) |
1273 | case 2: return newSViv (-(IV)( start [1] - '0' * 1)); |
779 | return newSViv (-(IV)uv); |
1274 | case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11)); |
|
|
1275 | case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
|
|
1276 | case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
|
|
1277 | case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111)); |
780 | } |
1278 | } |
|
|
1279 | else |
|
|
1280 | switch (len) |
|
|
1281 | { |
|
|
1282 | case 1: return newSViv ( start [0] - '0' * 1); |
|
|
1283 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
|
|
1284 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
|
|
1285 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
1286 | case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | { |
|
|
1290 | UV uv; |
|
|
1291 | int numtype = grok_number (start, len, &uv); |
|
|
1292 | if (numtype & IS_NUMBER_IN_UV) |
|
|
1293 | if (numtype & IS_NUMBER_NEG) |
|
|
1294 | { |
|
|
1295 | if (uv < (UV)IV_MIN) |
|
|
1296 | return newSViv (-(IV)uv); |
|
|
1297 | } |
781 | else |
1298 | else |
782 | return newSVuv (uv); |
1299 | return newSVuv (uv); |
783 | } |
1300 | } |
784 | |
1301 | |
|
|
1302 | len -= *start == '-' ? 1 : 0; |
|
|
1303 | |
|
|
1304 | // does not fit into IV or UV, try NV |
|
|
1305 | if (len <= NV_DIG) |
|
|
1306 | // fits into NV without loss of precision |
|
|
1307 | return newSVnv (json_atof (start)); |
|
|
1308 | |
|
|
1309 | // everything else fails, convert it to a string |
|
|
1310 | return newSVpvn (start, dec->cur - start); |
|
|
1311 | } |
|
|
1312 | |
|
|
1313 | // loss of precision here |
785 | return newSVnv (Atof (start)); |
1314 | return newSVnv (json_atof (start)); |
786 | |
1315 | |
787 | fail: |
1316 | fail: |
788 | return 0; |
1317 | return 0; |
789 | } |
1318 | } |
790 | |
1319 | |
… | |
… | |
814 | if (*dec->cur == ']') |
1343 | if (*dec->cur == ']') |
815 | { |
1344 | { |
816 | ++dec->cur; |
1345 | ++dec->cur; |
817 | break; |
1346 | break; |
818 | } |
1347 | } |
819 | |
1348 | |
820 | if (*dec->cur != ',') |
1349 | if (*dec->cur != ',') |
821 | ERR (", or ] expected while parsing array"); |
1350 | ERR (", or ] expected while parsing array"); |
822 | |
1351 | |
823 | ++dec->cur; |
1352 | ++dec->cur; |
|
|
1353 | |
|
|
1354 | decode_ws (dec); |
|
|
1355 | |
|
|
1356 | if (*dec->cur == ']' && dec->json.flags & F_RELAXED) |
|
|
1357 | { |
|
|
1358 | ++dec->cur; |
|
|
1359 | break; |
|
|
1360 | } |
824 | } |
1361 | } |
825 | |
1362 | |
826 | DEC_DEC_DEPTH; |
1363 | DEC_DEC_DEPTH; |
827 | return newRV_noinc ((SV *)av); |
1364 | return newRV_noinc ((SV *)av); |
828 | |
1365 | |
… | |
… | |
833 | } |
1370 | } |
834 | |
1371 | |
835 | static SV * |
1372 | static SV * |
836 | decode_hv (dec_t *dec) |
1373 | decode_hv (dec_t *dec) |
837 | { |
1374 | { |
|
|
1375 | SV *sv; |
838 | HV *hv = newHV (); |
1376 | HV *hv = newHV (); |
839 | |
1377 | |
840 | DEC_INC_DEPTH; |
1378 | DEC_INC_DEPTH; |
841 | decode_ws (dec); |
1379 | decode_ws (dec); |
842 | |
1380 | |
843 | if (*dec->cur == '}') |
1381 | if (*dec->cur == '}') |
844 | ++dec->cur; |
1382 | ++dec->cur; |
845 | else |
1383 | else |
846 | for (;;) |
1384 | for (;;) |
847 | { |
1385 | { |
|
|
1386 | EXPECT_CH ('"'); |
|
|
1387 | |
|
|
1388 | // heuristic: assume that |
|
|
1389 | // a) decode_str + hv_store_ent are abysmally slow. |
|
|
1390 | // b) most hash keys are short, simple ascii text. |
|
|
1391 | // => try to "fast-match" such strings to avoid |
|
|
1392 | // the overhead of decode_str + hv_store_ent. |
|
|
1393 | { |
848 | SV *key, *value; |
1394 | SV *value; |
|
|
1395 | char *p = dec->cur; |
|
|
1396 | char *e = p + 24; // only try up to 24 bytes |
849 | |
1397 | |
850 | decode_ws (dec); EXPECT_CH ('"'); |
1398 | for (;;) |
851 | |
|
|
852 | key = decode_str (dec); |
|
|
853 | if (!key) |
|
|
854 | goto fail; |
|
|
855 | |
|
|
856 | decode_ws (dec); EXPECT_CH (':'); |
|
|
857 | |
|
|
858 | value = decode_sv (dec); |
|
|
859 | if (!value) |
|
|
860 | { |
1399 | { |
|
|
1400 | // the >= 0x80 is false on most architectures |
|
|
1401 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
|
|
1402 | { |
|
|
1403 | // slow path, back up and use decode_str |
|
|
1404 | SV *key = decode_str (dec); |
|
|
1405 | if (!key) |
|
|
1406 | goto fail; |
|
|
1407 | |
|
|
1408 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1409 | |
|
|
1410 | decode_ws (dec); |
|
|
1411 | value = decode_sv (dec); |
|
|
1412 | if (!value) |
|
|
1413 | { |
|
|
1414 | SvREFCNT_dec (key); |
|
|
1415 | goto fail; |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | hv_store_ent (hv, key, value, 0); |
861 | SvREFCNT_dec (key); |
1419 | SvREFCNT_dec (key); |
|
|
1420 | |
|
|
1421 | break; |
|
|
1422 | } |
|
|
1423 | else if (*p == '"') |
|
|
1424 | { |
|
|
1425 | // fast path, got a simple key |
|
|
1426 | char *key = dec->cur; |
|
|
1427 | int len = p - key; |
|
|
1428 | dec->cur = p + 1; |
|
|
1429 | |
|
|
1430 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1431 | |
|
|
1432 | decode_ws (dec); |
|
|
1433 | value = decode_sv (dec); |
|
|
1434 | if (!value) |
862 | goto fail; |
1435 | goto fail; |
|
|
1436 | |
|
|
1437 | hv_store (hv, key, len, value, 0); |
|
|
1438 | |
|
|
1439 | break; |
|
|
1440 | } |
|
|
1441 | |
|
|
1442 | ++p; |
863 | } |
1443 | } |
864 | |
1444 | } |
865 | hv_store_ent (hv, key, value, 0); |
|
|
866 | SvREFCNT_dec (key); |
|
|
867 | |
1445 | |
868 | decode_ws (dec); |
1446 | decode_ws (dec); |
869 | |
1447 | |
870 | if (*dec->cur == '}') |
1448 | if (*dec->cur == '}') |
871 | { |
1449 | { |
… | |
… | |
875 | |
1453 | |
876 | if (*dec->cur != ',') |
1454 | if (*dec->cur != ',') |
877 | ERR (", or } expected while parsing object/hash"); |
1455 | ERR (", or } expected while parsing object/hash"); |
878 | |
1456 | |
879 | ++dec->cur; |
1457 | ++dec->cur; |
|
|
1458 | |
|
|
1459 | decode_ws (dec); |
|
|
1460 | |
|
|
1461 | if (*dec->cur == '}' && dec->json.flags & F_RELAXED) |
|
|
1462 | { |
|
|
1463 | ++dec->cur; |
|
|
1464 | break; |
|
|
1465 | } |
880 | } |
1466 | } |
881 | |
1467 | |
882 | DEC_DEC_DEPTH; |
1468 | DEC_DEC_DEPTH; |
883 | return newRV_noinc ((SV *)hv); |
1469 | sv = newRV_noinc ((SV *)hv); |
|
|
1470 | |
|
|
1471 | // check filter callbacks |
|
|
1472 | if (dec->json.flags & F_HOOK) |
|
|
1473 | { |
|
|
1474 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
|
|
1475 | { |
|
|
1476 | HE *cb, *he; |
|
|
1477 | |
|
|
1478 | hv_iterinit (hv); |
|
|
1479 | he = hv_iternext (hv); |
|
|
1480 | hv_iterinit (hv); |
|
|
1481 | |
|
|
1482 | // the next line creates a mortal sv each time it's called. |
|
|
1483 | // might want to optimise this for common cases. |
|
|
1484 | cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
1485 | |
|
|
1486 | if (cb) |
|
|
1487 | { |
|
|
1488 | dSP; |
|
|
1489 | int count; |
|
|
1490 | |
|
|
1491 | ENTER; SAVETMPS; |
|
|
1492 | SAVESTACK_POS (); |
|
|
1493 | PUSHMARK (SP); |
|
|
1494 | XPUSHs (HeVAL (he)); |
|
|
1495 | sv_2mortal (sv); |
|
|
1496 | |
|
|
1497 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
1498 | |
|
|
1499 | if (count == 1) |
|
|
1500 | { |
|
|
1501 | sv = newSVsv (POPs); |
|
|
1502 | FREETMPS; LEAVE; |
|
|
1503 | return sv; |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | SvREFCNT_inc (sv); |
|
|
1507 | FREETMPS; LEAVE; |
|
|
1508 | } |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | if (dec->json.cb_object) |
|
|
1512 | { |
|
|
1513 | dSP; |
|
|
1514 | int count; |
|
|
1515 | |
|
|
1516 | ENTER; SAVETMPS; |
|
|
1517 | SAVESTACK_POS (); |
|
|
1518 | PUSHMARK (SP); |
|
|
1519 | XPUSHs (sv_2mortal (sv)); |
|
|
1520 | |
|
|
1521 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
|
|
1522 | |
|
|
1523 | if (count == 1) |
|
|
1524 | { |
|
|
1525 | sv = newSVsv (POPs); |
|
|
1526 | FREETMPS; LEAVE; |
|
|
1527 | return sv; |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | SvREFCNT_inc (sv); |
|
|
1531 | FREETMPS; LEAVE; |
|
|
1532 | } |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | return sv; |
884 | |
1536 | |
885 | fail: |
1537 | fail: |
886 | SvREFCNT_dec (hv); |
1538 | SvREFCNT_dec (hv); |
887 | DEC_DEC_DEPTH; |
1539 | DEC_DEC_DEPTH; |
888 | return 0; |
1540 | return 0; |
889 | } |
1541 | } |
890 | |
1542 | |
891 | static SV * |
1543 | static SV * |
|
|
1544 | decode_tag (dec_t *dec) |
|
|
1545 | { |
|
|
1546 | SV *tag = 0; |
|
|
1547 | SV *val = 0; |
|
|
1548 | |
|
|
1549 | if (!(dec->json.flags & F_ALLOW_TAGS)) |
|
|
1550 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
|
|
1551 | |
|
|
1552 | ++dec->cur; |
|
|
1553 | |
|
|
1554 | decode_ws (dec); |
|
|
1555 | |
|
|
1556 | tag = decode_sv (dec); |
|
|
1557 | if (!tag) |
|
|
1558 | goto fail; |
|
|
1559 | |
|
|
1560 | if (!SvPOK (tag)) |
|
|
1561 | ERR ("malformed JSON string, (tag) must be a string"); |
|
|
1562 | |
|
|
1563 | decode_ws (dec); |
|
|
1564 | |
|
|
1565 | if (*dec->cur != ')') |
|
|
1566 | ERR (") expected after tag"); |
|
|
1567 | |
|
|
1568 | ++dec->cur; |
|
|
1569 | |
|
|
1570 | decode_ws (dec); |
|
|
1571 | |
|
|
1572 | val = decode_sv (dec); |
|
|
1573 | if (!val) |
|
|
1574 | goto fail; |
|
|
1575 | |
|
|
1576 | if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV) |
|
|
1577 | ERR ("malformed JSON string, tag value must be an array"); |
|
|
1578 | |
|
|
1579 | { |
|
|
1580 | AV *av = (AV *)SvRV (val); |
|
|
1581 | int i, len = av_len (av) + 1; |
|
|
1582 | HV *stash = gv_stashsv (tag, 0); |
|
|
1583 | SV *sv; |
|
|
1584 | |
|
|
1585 | if (!stash) |
|
|
1586 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
1587 | |
|
|
1588 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
1589 | |
|
|
1590 | if (!method) |
|
|
1591 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
1592 | |
|
|
1593 | dSP; |
|
|
1594 | |
|
|
1595 | ENTER; SAVETMPS; |
|
|
1596 | PUSHMARK (SP); |
|
|
1597 | EXTEND (SP, len + 2); |
|
|
1598 | // we re-bless the reference to get overload and other niceties right |
|
|
1599 | PUSHs (tag); |
|
|
1600 | PUSHs (sv_json); |
|
|
1601 | |
|
|
1602 | for (i = 0; i < len; ++i) |
|
|
1603 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1604 | |
|
|
1605 | PUTBACK; |
|
|
1606 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
1607 | SPAGAIN; |
|
|
1608 | |
|
|
1609 | SvREFCNT_dec (tag); |
|
|
1610 | SvREFCNT_dec (val); |
|
|
1611 | sv = SvREFCNT_inc (POPs); |
|
|
1612 | |
|
|
1613 | PUTBACK; |
|
|
1614 | |
|
|
1615 | FREETMPS; LEAVE; |
|
|
1616 | |
|
|
1617 | return sv; |
|
|
1618 | } |
|
|
1619 | |
|
|
1620 | fail: |
|
|
1621 | SvREFCNT_dec (tag); |
|
|
1622 | SvREFCNT_dec (val); |
|
|
1623 | return 0; |
|
|
1624 | } |
|
|
1625 | |
|
|
1626 | static SV * |
892 | decode_sv (dec_t *dec) |
1627 | decode_sv (dec_t *dec) |
893 | { |
1628 | { |
894 | decode_ws (dec); |
1629 | // the beauty of JSON: you need exactly one character lookahead |
|
|
1630 | // to parse everything. |
895 | switch (*dec->cur) |
1631 | switch (*dec->cur) |
896 | { |
1632 | { |
897 | case '"': ++dec->cur; return decode_str (dec); |
1633 | case '"': ++dec->cur; return decode_str (dec); |
898 | case '[': ++dec->cur; return decode_av (dec); |
1634 | case '[': ++dec->cur; return decode_av (dec); |
899 | case '{': ++dec->cur; return decode_hv (dec); |
1635 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
1636 | case '(': return decode_tag (dec); |
900 | |
1637 | |
901 | case '-': |
1638 | case '-': |
902 | case '0': case '1': case '2': case '3': case '4': |
1639 | case '0': case '1': case '2': case '3': case '4': |
903 | case '5': case '6': case '7': case '8': case '9': |
1640 | case '5': case '6': case '7': case '8': case '9': |
904 | return decode_num (dec); |
1641 | return decode_num (dec); |
905 | |
1642 | |
906 | case 't': |
1643 | case 't': |
907 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1644 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
908 | { |
1645 | { |
909 | dec->cur += 4; |
1646 | dec->cur += 4; |
|
|
1647 | #if JSON_SLOW |
|
|
1648 | bool_true = get_bool ("Types::Serialiser::true"); |
|
|
1649 | #endif |
910 | return newSViv (1); |
1650 | return newSVsv (bool_true); |
911 | } |
1651 | } |
912 | else |
1652 | else |
913 | ERR ("'true' expected"); |
1653 | ERR ("'true' expected"); |
914 | |
1654 | |
915 | break; |
1655 | break; |
916 | |
1656 | |
917 | case 'f': |
1657 | case 'f': |
918 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1658 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
919 | { |
1659 | { |
920 | dec->cur += 5; |
1660 | dec->cur += 5; |
|
|
1661 | #if JSON_SLOW |
|
|
1662 | bool_false = get_bool ("Types::Serialiser::false"); |
|
|
1663 | #endif |
921 | return newSViv (0); |
1664 | return newSVsv (bool_false); |
922 | } |
1665 | } |
923 | else |
1666 | else |
924 | ERR ("'false' expected"); |
1667 | ERR ("'false' expected"); |
925 | |
1668 | |
926 | break; |
1669 | break; |
… | |
… | |
935 | ERR ("'null' expected"); |
1678 | ERR ("'null' expected"); |
936 | |
1679 | |
937 | break; |
1680 | break; |
938 | |
1681 | |
939 | default: |
1682 | default: |
940 | ERR ("malformed json string, neither array, object, number, string or atom"); |
1683 | ERR ("malformed JSON string, neither tag, array, object, number, string or atom"); |
941 | break; |
1684 | break; |
942 | } |
1685 | } |
943 | |
1686 | |
944 | fail: |
1687 | fail: |
945 | return 0; |
1688 | return 0; |
946 | } |
1689 | } |
947 | |
1690 | |
948 | static SV * |
1691 | static SV * |
949 | decode_json (SV *string, U32 flags) |
1692 | decode_json (SV *string, JSON *json, char **offset_return) |
950 | { |
1693 | { |
|
|
1694 | dec_t dec; |
951 | SV *sv; |
1695 | SV *sv; |
952 | |
1696 | |
953 | if (flags & F_UTF8) |
1697 | /* work around bugs in 5.10 where manipulating magic values |
|
|
1698 | * makes perl ignore the magic in subsequent accesses. |
|
|
1699 | * also make a copy of non-PV values, to get them into a clean |
|
|
1700 | * state (SvPV should do that, but it's buggy, see below). |
|
|
1701 | * |
|
|
1702 | * SvIsCOW_shared_hash works around a bug in perl (possibly 5.16), |
|
|
1703 | * as reported by Reini Urban. |
|
|
1704 | */ |
|
|
1705 | /*SvGETMAGIC (string);*/ |
|
|
1706 | if (SvMAGICAL (string) || !SvPOK (string) || SvIsCOW_shared_hash (string)) |
|
|
1707 | string = sv_2mortal (newSVsv (string)); |
|
|
1708 | |
|
|
1709 | SvUPGRADE (string, SVt_PV); |
|
|
1710 | |
|
|
1711 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
1712 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
1713 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
1714 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
1715 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
1716 | * and hope for the best. |
|
|
1717 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
1718 | * assertion business is seriously broken, try yet another workaround |
|
|
1719 | * for the broken -DDEBUGGING. |
|
|
1720 | */ |
|
|
1721 | { |
|
|
1722 | #ifdef DEBUGGING |
|
|
1723 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
1724 | #else |
|
|
1725 | STRLEN offset = SvCUR (string); |
|
|
1726 | #endif |
|
|
1727 | |
|
|
1728 | if (offset > json->max_size && json->max_size) |
|
|
1729 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
1730 | (unsigned long)SvCUR (string), (unsigned long)json->max_size); |
|
|
1731 | } |
|
|
1732 | |
|
|
1733 | if (DECODE_WANTS_OCTETS (json)) |
954 | sv_utf8_downgrade (string, 0); |
1734 | sv_utf8_downgrade (string, 0); |
955 | else |
1735 | else |
956 | sv_utf8_upgrade (string); |
1736 | sv_utf8_upgrade (string); |
957 | |
1737 | |
958 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1738 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
959 | |
1739 | |
960 | dec_t dec; |
1740 | dec.json = *json; |
961 | dec.flags = flags; |
|
|
962 | dec.cur = SvPVX (string); |
1741 | dec.cur = SvPVX (string); |
963 | dec.end = SvEND (string); |
1742 | dec.end = SvEND (string); |
964 | dec.err = 0; |
1743 | dec.err = 0; |
965 | dec.depth = 0; |
1744 | dec.depth = 0; |
966 | dec.maxdepth = DEC_DEPTH (dec.flags); |
|
|
967 | |
1745 | |
968 | *SvEND (string) = 0; // this should basically be a nop, too |
1746 | if (dec.json.cb_object || dec.json.cb_sk_object) |
|
|
1747 | dec.json.flags |= F_HOOK; |
|
|
1748 | |
|
|
1749 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1750 | |
|
|
1751 | decode_ws (&dec); |
969 | sv = decode_sv (&dec); |
1752 | sv = decode_sv (&dec); |
970 | |
1753 | |
|
|
1754 | if (offset_return) |
|
|
1755 | *offset_return = dec.cur; |
|
|
1756 | |
|
|
1757 | if (!(offset_return || !sv)) |
|
|
1758 | { |
|
|
1759 | // check for trailing garbage |
|
|
1760 | decode_ws (&dec); |
|
|
1761 | |
|
|
1762 | if (*dec.cur) |
|
|
1763 | { |
|
|
1764 | dec.err = "garbage after JSON object"; |
|
|
1765 | SvREFCNT_dec (sv); |
|
|
1766 | sv = 0; |
|
|
1767 | } |
|
|
1768 | } |
|
|
1769 | |
971 | if (!sv) |
1770 | if (!sv) |
972 | { |
1771 | { |
973 | IV offset = dec.flags & F_UTF8 |
|
|
974 | ? dec.cur - SvPVX (string) |
|
|
975 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
976 | SV *uni = sv_newmortal (); |
1772 | SV *uni = sv_newmortal (); |
977 | |
1773 | |
978 | // horrible hack to silence warning inside pv_uni_display |
1774 | // horrible hack to silence warning inside pv_uni_display |
979 | COP cop = *PL_curcop; |
1775 | COP cop = *PL_curcop; |
980 | cop.cop_warnings = pWARN_NONE; |
1776 | cop.cop_warnings = pWARN_NONE; |
… | |
… | |
982 | SAVEVPTR (PL_curcop); |
1778 | SAVEVPTR (PL_curcop); |
983 | PL_curcop = &cop; |
1779 | PL_curcop = &cop; |
984 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1780 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
985 | LEAVE; |
1781 | LEAVE; |
986 | |
1782 | |
987 | croak ("%s, at character offset %d (%s)", |
1783 | croak ("%s, at character offset %d (before \"%s\")", |
988 | dec.err, |
1784 | dec.err, |
989 | (int)offset, |
1785 | (int)ptr_to_index (string, dec.cur), |
990 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1786 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
991 | } |
1787 | } |
992 | |
1788 | |
993 | sv = sv_2mortal (sv); |
1789 | sv = sv_2mortal (sv); |
994 | |
1790 | |
995 | if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1791 | if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv)) |
996 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1792 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
997 | |
1793 | |
998 | return sv; |
1794 | return sv; |
|
|
1795 | } |
|
|
1796 | |
|
|
1797 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1798 | // incremental parser |
|
|
1799 | |
|
|
1800 | static void |
|
|
1801 | incr_parse (JSON *self) |
|
|
1802 | { |
|
|
1803 | const char *p = SvPVX (self->incr_text) + self->incr_pos; |
|
|
1804 | |
|
|
1805 | // the state machine here is a bit convoluted and could be simplified a lot |
|
|
1806 | // but this would make it slower, so... |
|
|
1807 | |
|
|
1808 | for (;;) |
|
|
1809 | { |
|
|
1810 | //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 |
|
|
1811 | switch (self->incr_mode) |
|
|
1812 | { |
|
|
1813 | // only used for initial whitespace skipping |
|
|
1814 | case INCR_M_WS: |
|
|
1815 | for (;;) |
|
|
1816 | { |
|
|
1817 | if (*p > 0x20) |
|
|
1818 | { |
|
|
1819 | if (*p == '#') |
|
|
1820 | { |
|
|
1821 | self->incr_mode = INCR_M_C0; |
|
|
1822 | goto incr_m_c; |
|
|
1823 | } |
|
|
1824 | else |
|
|
1825 | { |
|
|
1826 | self->incr_mode = INCR_M_JSON; |
|
|
1827 | goto incr_m_json; |
|
|
1828 | } |
|
|
1829 | } |
|
|
1830 | else if (!*p) |
|
|
1831 | goto interrupt; |
|
|
1832 | |
|
|
1833 | ++p; |
|
|
1834 | } |
|
|
1835 | |
|
|
1836 | // skip a single char inside a string (for \\-processing) |
|
|
1837 | case INCR_M_BS: |
|
|
1838 | if (!*p) |
|
|
1839 | goto interrupt; |
|
|
1840 | |
|
|
1841 | ++p; |
|
|
1842 | self->incr_mode = INCR_M_STR; |
|
|
1843 | goto incr_m_str; |
|
|
1844 | |
|
|
1845 | // inside #-style comments |
|
|
1846 | case INCR_M_C0: |
|
|
1847 | case INCR_M_C1: |
|
|
1848 | incr_m_c: |
|
|
1849 | for (;;) |
|
|
1850 | { |
|
|
1851 | if (*p == '\n') |
|
|
1852 | { |
|
|
1853 | self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON; |
|
|
1854 | break; |
|
|
1855 | } |
|
|
1856 | else if (!*p) |
|
|
1857 | goto interrupt; |
|
|
1858 | |
|
|
1859 | ++p; |
|
|
1860 | } |
|
|
1861 | |
|
|
1862 | break; |
|
|
1863 | |
|
|
1864 | // inside a string |
|
|
1865 | case INCR_M_STR: |
|
|
1866 | incr_m_str: |
|
|
1867 | for (;;) |
|
|
1868 | { |
|
|
1869 | if (*p == '"') |
|
|
1870 | { |
|
|
1871 | ++p; |
|
|
1872 | self->incr_mode = INCR_M_JSON; |
|
|
1873 | |
|
|
1874 | if (!self->incr_nest) |
|
|
1875 | goto interrupt; |
|
|
1876 | |
|
|
1877 | goto incr_m_json; |
|
|
1878 | } |
|
|
1879 | else if (*p == '\\') |
|
|
1880 | { |
|
|
1881 | ++p; // "virtually" consumes character after \ |
|
|
1882 | |
|
|
1883 | if (!*p) // if at end of string we have to switch modes |
|
|
1884 | { |
|
|
1885 | self->incr_mode = INCR_M_BS; |
|
|
1886 | goto interrupt; |
|
|
1887 | } |
|
|
1888 | } |
|
|
1889 | else if (!*p) |
|
|
1890 | goto interrupt; |
|
|
1891 | |
|
|
1892 | ++p; |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | // after initial ws, outside string |
|
|
1896 | case INCR_M_JSON: |
|
|
1897 | incr_m_json: |
|
|
1898 | for (;;) |
|
|
1899 | { |
|
|
1900 | switch (*p++) |
|
|
1901 | { |
|
|
1902 | case 0: |
|
|
1903 | --p; |
|
|
1904 | goto interrupt; |
|
|
1905 | |
|
|
1906 | case 0x09: |
|
|
1907 | case 0x0a: |
|
|
1908 | case 0x0d: |
|
|
1909 | case 0x20: |
|
|
1910 | if (!self->incr_nest) |
|
|
1911 | { |
|
|
1912 | --p; // do not eat the whitespace, let the next round do it |
|
|
1913 | goto interrupt; |
|
|
1914 | } |
|
|
1915 | break; |
|
|
1916 | |
|
|
1917 | case '"': |
|
|
1918 | self->incr_mode = INCR_M_STR; |
|
|
1919 | goto incr_m_str; |
|
|
1920 | |
|
|
1921 | case '[': |
|
|
1922 | case '{': |
|
|
1923 | case '(': |
|
|
1924 | if (++self->incr_nest > self->max_depth) |
|
|
1925 | croak (ERR_NESTING_EXCEEDED); |
|
|
1926 | break; |
|
|
1927 | |
|
|
1928 | case ']': |
|
|
1929 | case '}': |
|
|
1930 | if (--self->incr_nest <= 0) |
|
|
1931 | goto interrupt; |
|
|
1932 | break; |
|
|
1933 | |
|
|
1934 | case ')': |
|
|
1935 | --self->incr_nest; |
|
|
1936 | break; |
|
|
1937 | |
|
|
1938 | case '#': |
|
|
1939 | self->incr_mode = INCR_M_C1; |
|
|
1940 | goto incr_m_c; |
|
|
1941 | } |
|
|
1942 | } |
|
|
1943 | } |
|
|
1944 | |
|
|
1945 | modechange: |
|
|
1946 | ; |
|
|
1947 | } |
|
|
1948 | |
|
|
1949 | interrupt: |
|
|
1950 | self->incr_pos = p - SvPVX (self->incr_text); |
|
|
1951 | //printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D |
|
|
1952 | //printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D |
999 | } |
1953 | } |
1000 | |
1954 | |
1001 | ///////////////////////////////////////////////////////////////////////////// |
1955 | ///////////////////////////////////////////////////////////////////////////// |
1002 | // XS interface functions |
1956 | // XS interface functions |
1003 | |
1957 | |
1004 | MODULE = JSON::XS PACKAGE = JSON::XS |
1958 | MODULE = JSON::XS PACKAGE = JSON::XS |
1005 | |
1959 | |
1006 | BOOT: |
1960 | BOOT: |
1007 | { |
1961 | { |
1008 | int i; |
1962 | int i; |
1009 | |
|
|
1010 | memset (decode_hexdigit, 0xff, 256); |
|
|
1011 | |
1963 | |
1012 | for (i = 0; i < 256; ++i) |
1964 | for (i = 0; i < 256; ++i) |
1013 | decode_hexdigit [i] = |
1965 | decode_hexdigit [i] = |
1014 | i >= '0' && i <= '9' ? i - '0' |
1966 | i >= '0' && i <= '9' ? i - '0' |
1015 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
1967 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
1016 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
1968 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
1017 | : -1; |
1969 | : -1; |
1018 | |
1970 | |
1019 | json_stash = gv_stashpv ("JSON::XS", 1); |
1971 | json_stash = gv_stashpv ("JSON::XS" , 1); |
|
|
1972 | bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
|
|
1973 | bool_true = get_bool ("Types::Serialiser::true"); |
|
|
1974 | bool_false = get_bool ("Types::Serialiser::false"); |
|
|
1975 | |
|
|
1976 | sv_json = newSVpv ("JSON", 0); |
|
|
1977 | SvREADONLY_on (sv_json); |
|
|
1978 | |
|
|
1979 | CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ |
1020 | } |
1980 | } |
1021 | |
1981 | |
1022 | PROTOTYPES: DISABLE |
1982 | PROTOTYPES: DISABLE |
1023 | |
1983 | |
1024 | SV *new (char *dummy) |
1984 | void CLONE (...) |
1025 | CODE: |
1985 | CODE: |
1026 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
1986 | json_stash = 0; |
|
|
1987 | bool_stash = 0; |
|
|
1988 | |
|
|
1989 | void new (char *klass) |
|
|
1990 | PPCODE: |
|
|
1991 | { |
|
|
1992 | SV *pv = NEWSV (0, sizeof (JSON)); |
|
|
1993 | SvPOK_only (pv); |
|
|
1994 | json_init ((JSON *)SvPVX (pv)); |
|
|
1995 | XPUSHs (sv_2mortal (sv_bless ( |
|
|
1996 | newRV_noinc (pv), |
|
|
1997 | strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) |
|
|
1998 | ))); |
|
|
1999 | } |
|
|
2000 | |
|
|
2001 | void ascii (JSON *self, int enable = 1) |
|
|
2002 | ALIAS: |
|
|
2003 | ascii = F_ASCII |
|
|
2004 | latin1 = F_LATIN1 |
|
|
2005 | utf8 = F_UTF8 |
|
|
2006 | indent = F_INDENT |
|
|
2007 | canonical = F_CANONICAL |
|
|
2008 | space_before = F_SPACE_BEFORE |
|
|
2009 | space_after = F_SPACE_AFTER |
|
|
2010 | pretty = F_PRETTY |
|
|
2011 | allow_nonref = F_ALLOW_NONREF |
|
|
2012 | shrink = F_SHRINK |
|
|
2013 | allow_blessed = F_ALLOW_BLESSED |
|
|
2014 | convert_blessed = F_CONV_BLESSED |
|
|
2015 | relaxed = F_RELAXED |
|
|
2016 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
2017 | allow_tags = F_ALLOW_TAGS |
|
|
2018 | PPCODE: |
|
|
2019 | { |
|
|
2020 | if (enable) |
|
|
2021 | self->flags |= ix; |
|
|
2022 | else |
|
|
2023 | self->flags &= ~ix; |
|
|
2024 | |
|
|
2025 | XPUSHs (ST (0)); |
|
|
2026 | } |
|
|
2027 | |
|
|
2028 | void get_ascii (JSON *self) |
|
|
2029 | ALIAS: |
|
|
2030 | get_ascii = F_ASCII |
|
|
2031 | get_latin1 = F_LATIN1 |
|
|
2032 | get_utf8 = F_UTF8 |
|
|
2033 | get_indent = F_INDENT |
|
|
2034 | get_canonical = F_CANONICAL |
|
|
2035 | get_space_before = F_SPACE_BEFORE |
|
|
2036 | get_space_after = F_SPACE_AFTER |
|
|
2037 | get_allow_nonref = F_ALLOW_NONREF |
|
|
2038 | get_shrink = F_SHRINK |
|
|
2039 | get_allow_blessed = F_ALLOW_BLESSED |
|
|
2040 | get_convert_blessed = F_CONV_BLESSED |
|
|
2041 | get_relaxed = F_RELAXED |
|
|
2042 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
2043 | get_allow_tags = F_ALLOW_TAGS |
|
|
2044 | PPCODE: |
|
|
2045 | XPUSHs (boolSV (self->flags & ix)); |
|
|
2046 | |
|
|
2047 | void max_depth (JSON *self, U32 max_depth = 0x80000000UL) |
|
|
2048 | PPCODE: |
|
|
2049 | self->max_depth = max_depth; |
|
|
2050 | XPUSHs (ST (0)); |
|
|
2051 | |
|
|
2052 | U32 get_max_depth (JSON *self) |
|
|
2053 | CODE: |
|
|
2054 | RETVAL = self->max_depth; |
1027 | OUTPUT: |
2055 | OUTPUT: |
1028 | RETVAL |
2056 | RETVAL |
1029 | |
2057 | |
1030 | SV *ascii (SV *self, int enable = 1) |
2058 | void max_size (JSON *self, U32 max_size = 0) |
1031 | ALIAS: |
2059 | PPCODE: |
1032 | ascii = F_ASCII |
2060 | self->max_size = max_size; |
1033 | utf8 = F_UTF8 |
2061 | XPUSHs (ST (0)); |
1034 | indent = F_INDENT |
2062 | |
1035 | canonical = F_CANONICAL |
2063 | int get_max_size (JSON *self) |
1036 | space_before = F_SPACE_BEFORE |
|
|
1037 | space_after = F_SPACE_AFTER |
|
|
1038 | pretty = F_PRETTY |
|
|
1039 | allow_nonref = F_ALLOW_NONREF |
|
|
1040 | shrink = F_SHRINK |
|
|
1041 | CODE: |
2064 | CODE: |
1042 | { |
2065 | RETVAL = self->max_size; |
1043 | UV *uv = SvJSON (self); |
|
|
1044 | if (enable) |
|
|
1045 | *uv |= ix; |
|
|
1046 | else |
|
|
1047 | *uv &= ~ix; |
|
|
1048 | |
|
|
1049 | RETVAL = newSVsv (self); |
|
|
1050 | } |
|
|
1051 | OUTPUT: |
2066 | OUTPUT: |
1052 | RETVAL |
2067 | RETVAL |
1053 | |
2068 | |
1054 | SV *max_depth (SV *self, int max_depth = 0x80000000UL) |
2069 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
|
|
2070 | PPCODE: |
|
|
2071 | { |
|
|
2072 | SvREFCNT_dec (self->cb_object); |
|
|
2073 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
2074 | |
|
|
2075 | XPUSHs (ST (0)); |
|
|
2076 | } |
|
|
2077 | |
|
|
2078 | void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
2079 | PPCODE: |
|
|
2080 | { |
|
|
2081 | if (!self->cb_sk_object) |
|
|
2082 | self->cb_sk_object = newHV (); |
|
|
2083 | |
|
|
2084 | if (SvOK (cb)) |
|
|
2085 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
2086 | else |
|
|
2087 | { |
|
|
2088 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
2089 | |
|
|
2090 | if (!HvKEYS (self->cb_sk_object)) |
|
|
2091 | { |
|
|
2092 | SvREFCNT_dec (self->cb_sk_object); |
|
|
2093 | self->cb_sk_object = 0; |
|
|
2094 | } |
|
|
2095 | } |
|
|
2096 | |
|
|
2097 | XPUSHs (ST (0)); |
|
|
2098 | } |
|
|
2099 | |
|
|
2100 | void encode (JSON *self, SV *scalar) |
|
|
2101 | PPCODE: |
|
|
2102 | PUTBACK; scalar = encode_json (scalar, self); SPAGAIN; |
|
|
2103 | XPUSHs (scalar); |
|
|
2104 | |
|
|
2105 | void decode (JSON *self, SV *jsonstr) |
|
|
2106 | PPCODE: |
|
|
2107 | PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN; |
|
|
2108 | XPUSHs (jsonstr); |
|
|
2109 | |
|
|
2110 | void decode_prefix (JSON *self, SV *jsonstr) |
|
|
2111 | PPCODE: |
|
|
2112 | { |
|
|
2113 | SV *sv; |
|
|
2114 | char *offset; |
|
|
2115 | PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN; |
|
|
2116 | EXTEND (SP, 2); |
|
|
2117 | PUSHs (sv); |
|
|
2118 | PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); |
|
|
2119 | } |
|
|
2120 | |
|
|
2121 | void incr_parse (JSON *self, SV *jsonstr = 0) |
|
|
2122 | PPCODE: |
|
|
2123 | { |
|
|
2124 | if (!self->incr_text) |
|
|
2125 | self->incr_text = newSVpvn ("", 0); |
|
|
2126 | |
|
|
2127 | /* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */ |
|
|
2128 | if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text)) |
|
|
2129 | if (DECODE_WANTS_OCTETS (self)) |
|
|
2130 | { |
|
|
2131 | if (self->incr_pos) |
|
|
2132 | self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text), |
|
|
2133 | (U8 *)SvPVX (self->incr_text) + self->incr_pos); |
|
|
2134 | |
|
|
2135 | sv_utf8_downgrade (self->incr_text, 0); |
|
|
2136 | } |
|
|
2137 | else |
|
|
2138 | { |
|
|
2139 | sv_utf8_upgrade (self->incr_text); |
|
|
2140 | |
|
|
2141 | if (self->incr_pos) |
|
|
2142 | self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos) |
|
|
2143 | - (U8 *)SvPVX (self->incr_text); |
|
|
2144 | } |
|
|
2145 | |
|
|
2146 | // append data, if any |
|
|
2147 | if (jsonstr) |
|
|
2148 | { |
|
|
2149 | /* make sure both strings have same encoding */ |
|
|
2150 | if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text)) |
|
|
2151 | if (SvUTF8 (jsonstr)) |
|
|
2152 | sv_utf8_downgrade (jsonstr, 0); |
|
|
2153 | else |
|
|
2154 | sv_utf8_upgrade (jsonstr); |
|
|
2155 | |
|
|
2156 | /* and then just blindly append */ |
|
|
2157 | { |
|
|
2158 | STRLEN len; |
|
|
2159 | const char *str = SvPV (jsonstr, len); |
|
|
2160 | STRLEN cur = SvCUR (self->incr_text); |
|
|
2161 | |
|
|
2162 | if (SvLEN (self->incr_text) <= cur + len) |
|
|
2163 | SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
|
|
2164 | |
|
|
2165 | Move (str, SvEND (self->incr_text), len, char); |
|
|
2166 | SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); |
|
|
2167 | *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there |
|
|
2168 | } |
|
|
2169 | } |
|
|
2170 | |
|
|
2171 | if (GIMME_V != G_VOID) |
|
|
2172 | do |
|
|
2173 | { |
|
|
2174 | SV *sv; |
|
|
2175 | char *offset; |
|
|
2176 | |
|
|
2177 | if (!INCR_DONE (self)) |
|
|
2178 | { |
|
|
2179 | incr_parse (self); |
|
|
2180 | |
|
|
2181 | if (self->incr_pos > self->max_size && self->max_size) |
|
|
2182 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
2183 | (unsigned long)self->incr_pos, (unsigned long)self->max_size); |
|
|
2184 | |
|
|
2185 | if (!INCR_DONE (self)) |
|
|
2186 | { |
|
|
2187 | // as an optimisation, do not accumulate white space in the incr buffer |
|
|
2188 | if (self->incr_mode == INCR_M_WS && self->incr_pos) |
|
|
2189 | { |
|
|
2190 | self->incr_pos = 0; |
|
|
2191 | SvCUR_set (self->incr_text, 0); |
|
|
2192 | } |
|
|
2193 | |
|
|
2194 | break; |
|
|
2195 | } |
|
|
2196 | } |
|
|
2197 | |
|
|
2198 | PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN; |
|
|
2199 | XPUSHs (sv); |
|
|
2200 | |
|
|
2201 | self->incr_pos -= offset - SvPVX (self->incr_text); |
|
|
2202 | self->incr_nest = 0; |
|
|
2203 | self->incr_mode = 0; |
|
|
2204 | |
|
|
2205 | sv_chop (self->incr_text, offset); |
|
|
2206 | } |
|
|
2207 | while (GIMME_V == G_ARRAY); |
|
|
2208 | } |
|
|
2209 | |
|
|
2210 | SV *incr_text (JSON *self) |
|
|
2211 | ATTRS: lvalue |
1055 | CODE: |
2212 | CODE: |
1056 | { |
2213 | { |
1057 | UV *uv = SvJSON (self); |
2214 | if (self->incr_pos) |
1058 | UV log2 = 0; |
2215 | croak ("incr_text can not be called when the incremental parser already started parsing"); |
1059 | |
2216 | |
1060 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
2217 | RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef; |
1061 | |
|
|
1062 | while ((1UL << log2) < max_depth) |
|
|
1063 | ++log2; |
|
|
1064 | |
|
|
1065 | *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1066 | |
|
|
1067 | RETVAL = newSVsv (self); |
|
|
1068 | } |
2218 | } |
1069 | OUTPUT: |
2219 | OUTPUT: |
1070 | RETVAL |
2220 | RETVAL |
1071 | |
2221 | |
|
|
2222 | void incr_skip (JSON *self) |
|
|
2223 | CODE: |
|
|
2224 | { |
|
|
2225 | if (self->incr_pos) |
|
|
2226 | { |
|
|
2227 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos); |
|
|
2228 | self->incr_pos = 0; |
|
|
2229 | self->incr_nest = 0; |
|
|
2230 | self->incr_mode = 0; |
|
|
2231 | } |
|
|
2232 | } |
|
|
2233 | |
|
|
2234 | void incr_reset (JSON *self) |
|
|
2235 | CODE: |
|
|
2236 | { |
|
|
2237 | SvREFCNT_dec (self->incr_text); |
|
|
2238 | self->incr_text = 0; |
|
|
2239 | self->incr_pos = 0; |
|
|
2240 | self->incr_nest = 0; |
|
|
2241 | self->incr_mode = 0; |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | void DESTROY (JSON *self) |
|
|
2245 | CODE: |
|
|
2246 | SvREFCNT_dec (self->cb_sk_object); |
|
|
2247 | SvREFCNT_dec (self->cb_object); |
|
|
2248 | SvREFCNT_dec (self->incr_text); |
|
|
2249 | |
|
|
2250 | PROTOTYPES: ENABLE |
|
|
2251 | |
1072 | void encode (SV *self, SV *scalar) |
2252 | void encode_json (SV *scalar) |
1073 | PPCODE: |
2253 | PPCODE: |
1074 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
2254 | { |
|
|
2255 | JSON json; |
|
|
2256 | json_init (&json); |
|
|
2257 | json.flags |= F_UTF8; |
|
|
2258 | PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN; |
|
|
2259 | XPUSHs (scalar); |
|
|
2260 | } |
1075 | |
2261 | |
1076 | void decode (SV *self, SV *jsonstr) |
2262 | void decode_json (SV *jsonstr) |
1077 | PPCODE: |
2263 | PPCODE: |
1078 | XPUSHs (decode_json (jsonstr, *SvJSON (self))); |
2264 | { |
|
|
2265 | JSON json; |
|
|
2266 | json_init (&json); |
|
|
2267 | json.flags |= F_UTF8; |
|
|
2268 | PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN; |
|
|
2269 | XPUSHs (jsonstr); |
|
|
2270 | } |
1079 | |
2271 | |
1080 | PROTOTYPES: ENABLE |
|
|
1081 | |
|
|
1082 | void to_json (SV *scalar) |
|
|
1083 | ALIAS: |
|
|
1084 | objToJson = 0 |
|
|
1085 | PPCODE: |
|
|
1086 | XPUSHs (encode_json (scalar, F_DEFAULT | F_UTF8)); |
|
|
1087 | |
|
|
1088 | void from_json (SV *jsonstr) |
|
|
1089 | ALIAS: |
|
|
1090 | jsonToObj = 0 |
|
|
1091 | PPCODE: |
|
|
1092 | XPUSHs (decode_json (jsonstr, F_DEFAULT | F_UTF8)); |
|
|
1093 | |
|
|