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> |
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11 | #include <inttypes.h> |
8 | |
12 | |
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13 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
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14 | # define snprintf _snprintf // C compilers have this in stdio.h |
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15 | #endif |
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16 | |
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17 | // some old perls do not have this, try to make it work, no |
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18 | // guarantees, though. if it breaks, you get to keep the pieces. |
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19 | #ifndef UTF8_MAXBYTES |
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20 | # define UTF8_MAXBYTES 13 |
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21 | #endif |
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22 | |
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23 | // compatibility with perl <5.18 |
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24 | #ifndef HvNAMELEN_get |
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25 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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26 | #endif |
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27 | #ifndef HvNAMELEN |
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28 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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29 | #endif |
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30 | #ifndef HvNAMEUTF8 |
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31 | # define HvNAMEUTF8(hv) 0 |
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32 | #endif |
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33 | |
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34 | // three extra for rounding, sign, and end of string |
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35 | #define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3) |
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36 | |
9 | #define F_ASCII 0x00000001 |
37 | #define F_ASCII 0x00000001UL |
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38 | #define F_LATIN1 0x00000002UL |
10 | #define F_UTF8 0x00000002 |
39 | #define F_UTF8 0x00000004UL |
11 | #define F_INDENT 0x00000004 |
40 | #define F_INDENT 0x00000008UL |
12 | #define F_CANONICAL 0x00000008 |
41 | #define F_CANONICAL 0x00000010UL |
13 | #define F_SPACE_BEFORE 0x00000010 |
42 | #define F_SPACE_BEFORE 0x00000020UL |
14 | #define F_SPACE_AFTER 0x00000020 |
43 | #define F_SPACE_AFTER 0x00000040UL |
15 | #define F_ALLOW_NONREF 0x00000080 |
44 | #define F_ALLOW_NONREF 0x00000100UL |
16 | #define F_SHRINK 0x00000100 |
45 | #define F_SHRINK 0x00000200UL |
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46 | #define F_ALLOW_BLESSED 0x00000400UL |
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47 | #define F_CONV_BLESSED 0x00000800UL |
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48 | #define F_RELAXED 0x00001000UL |
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49 | #define F_ALLOW_UNKNOWN 0x00002000UL |
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50 | #define F_ALLOW_TAGS 0x00004000UL |
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51 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
17 | |
52 | |
18 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
53 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
19 | #define F_DEFAULT 0 |
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20 | |
54 | |
21 | #define INIT_SIZE 32 // initial scalar size to be allocated |
55 | #define INIT_SIZE 64 // initial scalar size to be allocated |
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56 | #define INDENT_STEP 3 // spaces per indentation level |
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57 | |
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58 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
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59 | |
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60 | #define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8) |
22 | |
61 | |
23 | #define SB do { |
62 | #define SB do { |
24 | #define SE } while (0) |
63 | #define SE } while (0) |
25 | |
64 | |
26 | static HV *json_stash; |
65 | #if __GNUC__ >= 3 |
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66 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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67 | # define INLINE static inline |
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68 | #else |
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69 | # define expect(expr,value) (expr) |
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70 | # define INLINE static |
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71 | #endif |
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72 | |
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73 | #define expect_false(expr) expect ((expr) != 0, 0) |
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74 | #define expect_true(expr) expect ((expr) != 0, 1) |
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75 | |
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76 | #define IN_RANGE_INC(type,val,beg,end) \ |
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77 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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78 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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79 | |
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80 | #define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
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81 | |
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82 | #ifdef USE_ITHREADS |
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83 | # define JSON_STASH (expect_true (json_stash) ? json_stash : gv_stashpv ("JSON::XS", 1)) |
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84 | # define BOOL_STASH (expect_true (bool_stash) ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1)) |
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85 | # define GET_BOOL(value) (expect_true (bool_ ## value) ? bool_ ## value : get_bool ("Types::Serialiser::" # value)) |
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86 | #else |
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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 | # define GET_BOOL(value) bool_ ## value |
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90 | #endif |
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91 | |
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92 | // the amount of HEs to allocate on the stack, when sorting keys |
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93 | #define STACK_HES 64 |
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94 | |
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95 | static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean:: |
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96 | static SV *bool_false, *bool_true; |
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97 | static SV *sv_json; |
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98 | |
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99 | enum { |
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100 | INCR_M_WS = 0, // initial whitespace skipping, must be 0 |
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101 | INCR_M_TFN, // inside true/false/null |
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102 | INCR_M_NUM, // inside number |
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103 | INCR_M_STR, // inside string |
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104 | INCR_M_BS, // inside backslash |
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105 | INCR_M_C0, // inside comment in initial whitespace sequence |
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106 | INCR_M_C1, // inside comment in other places |
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107 | INCR_M_JSON // outside anything, count nesting |
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108 | }; |
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109 | |
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110 | #define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON) |
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111 | |
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112 | typedef struct { |
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113 | U32 flags; |
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114 | U32 max_depth; |
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115 | STRLEN max_size; |
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116 | |
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117 | SV *cb_object; |
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118 | HV *cb_sk_object; |
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119 | |
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120 | // for the incremental parser |
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121 | SV *incr_text; // the source text so far |
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122 | STRLEN incr_pos; // the current offset into the text |
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123 | int incr_nest; // {[]}-nesting level |
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124 | unsigned char incr_mode; |
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125 | |
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126 | SV *v_false, *v_true; |
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127 | } JSON; |
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128 | |
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129 | INLINE void |
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130 | json_init (JSON *json) |
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131 | { |
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132 | static const JSON init = { F_ALLOW_NONREF, 512 }; |
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133 | |
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134 | *json = init; |
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135 | } |
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136 | |
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137 | ///////////////////////////////////////////////////////////////////////////// |
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138 | // utility functions |
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139 | |
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140 | INLINE SV * |
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141 | get_bool (const char *name) |
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142 | { |
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143 | SV *sv = get_sv (name, 1); |
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144 | |
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145 | SvREADONLY_on (sv); |
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146 | SvREADONLY_on (SvRV (sv)); |
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147 | |
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148 | return sv; |
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149 | } |
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150 | |
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151 | INLINE void |
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152 | shrink (SV *sv) |
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153 | { |
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154 | sv_utf8_downgrade (sv, 1); |
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155 | |
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156 | if (SvLEN (sv) > SvCUR (sv) + 1) |
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157 | { |
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158 | #ifdef SvPV_shrink_to_cur |
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159 | SvPV_shrink_to_cur (sv); |
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160 | #elif defined (SvPV_renew) |
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161 | SvPV_renew (sv, SvCUR (sv) + 1); |
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162 | #endif |
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163 | } |
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164 | } |
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165 | |
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166 | /* adds two STRLENs together, slow, and with paranoia */ |
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167 | static STRLEN |
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168 | strlen_sum (STRLEN l1, STRLEN l2) |
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169 | { |
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170 | size_t sum = l1 + l2; |
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171 | |
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172 | if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum) |
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173 | croak ("JSON::XS: string size overflow"); |
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174 | |
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175 | return sum; |
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176 | } |
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177 | |
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178 | /* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */ |
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179 | static char * |
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180 | json_sv_grow (SV *sv, size_t len1, size_t len2) |
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181 | { |
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182 | len1 = strlen_sum (len1, len2); |
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183 | len1 = strlen_sum (len1, len1 >> 1); |
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184 | |
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185 | if (len1 > 4096 - 24) |
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186 | len1 = (len1 | 4095) - 24; |
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187 | |
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188 | return SvGROW (sv, len1); |
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189 | } |
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190 | |
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191 | // decode a utf-8 character and return it, or (UV)-1 in |
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192 | // case of an error. |
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193 | // we special-case "safe" characters from U+80 .. U+7FF, |
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194 | // but use the very good perl function to parse anything else. |
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195 | // note that we never call this function for a ascii codepoints |
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196 | INLINE UV |
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197 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
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198 | { |
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199 | if (expect_true (len >= 2 |
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200 | && IN_RANGE_INC (char, s[0], 0xc2, 0xdf) |
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201 | && IN_RANGE_INC (char, s[1], 0x80, 0xbf))) |
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202 | { |
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203 | *clen = 2; |
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204 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
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205 | } |
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206 | else |
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207 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
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208 | } |
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209 | |
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210 | // likewise for encoding, also never called for ascii codepoints |
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211 | // this function takes advantage of this fact, although current gccs |
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212 | // seem to optimise the check for >= 0x80 away anyways |
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213 | INLINE unsigned char * |
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214 | encode_utf8 (unsigned char *s, UV ch) |
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215 | { |
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216 | if (expect_false (ch < 0x000080)) |
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217 | *s++ = ch; |
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218 | else if (expect_true (ch < 0x000800)) |
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219 | *s++ = 0xc0 | ( ch >> 6), |
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220 | *s++ = 0x80 | ( ch & 0x3f); |
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221 | else if ( ch < 0x010000) |
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222 | *s++ = 0xe0 | ( ch >> 12), |
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223 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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224 | *s++ = 0x80 | ( ch & 0x3f); |
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225 | else if ( ch < 0x110000) |
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226 | *s++ = 0xf0 | ( ch >> 18), |
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227 | *s++ = 0x80 | ((ch >> 12) & 0x3f), |
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228 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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229 | *s++ = 0x80 | ( ch & 0x3f); |
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230 | |
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231 | return s; |
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232 | } |
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233 | |
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234 | // convert offset pointer to character index, sv must be string |
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235 | static STRLEN |
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236 | ptr_to_index (SV *sv, char *offset) |
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237 | { |
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238 | return SvUTF8 (sv) |
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239 | ? utf8_distance (offset, SvPVX (sv)) |
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240 | : offset - SvPVX (sv); |
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241 | } |
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242 | |
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243 | ///////////////////////////////////////////////////////////////////////////// |
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244 | // fp hell |
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245 | |
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246 | // scan a group of digits, and a trailing exponent |
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247 | static void |
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248 | json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp, int maxdepth) |
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249 | { |
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250 | UV uaccum = 0; |
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251 | int eaccum = 0; |
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252 | |
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253 | // if we recurse too deep, skip all remaining digits |
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254 | // to avoid a stack overflow attack |
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255 | if (expect_false (--maxdepth <= 0)) |
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256 | while (((U8)*s - '0') < 10) |
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257 | ++s; |
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258 | |
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259 | for (;;) |
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260 | { |
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261 | U8 dig = (U8)*s - '0'; |
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262 | |
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263 | if (expect_false (dig >= 10)) |
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264 | { |
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265 | if (dig == (U8)((U8)'.' - (U8)'0')) |
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266 | { |
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267 | ++s; |
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268 | json_atof_scan1 (s, accum, expo, 1, maxdepth); |
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269 | } |
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270 | else if ((dig | ' ') == 'e' - '0') |
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271 | { |
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272 | int exp2 = 0; |
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273 | int neg = 0; |
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274 | |
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275 | ++s; |
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276 | |
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277 | if (*s == '-') |
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278 | { |
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279 | ++s; |
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280 | neg = 1; |
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281 | } |
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282 | else if (*s == '+') |
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283 | ++s; |
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284 | |
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285 | while ((dig = (U8)*s - '0') < 10) |
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286 | exp2 = exp2 * 10 + *s++ - '0'; |
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287 | |
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288 | *expo += neg ? -exp2 : exp2; |
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289 | } |
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290 | |
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291 | break; |
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292 | } |
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293 | |
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294 | ++s; |
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295 | |
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296 | uaccum = uaccum * 10 + dig; |
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297 | ++eaccum; |
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298 | |
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299 | // if we have too many digits, then recurse for more |
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300 | // we actually do this for rather few digits |
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301 | if (uaccum >= (UV_MAX - 9) / 10) |
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302 | { |
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303 | if (postdp) *expo -= eaccum; |
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304 | json_atof_scan1 (s, accum, expo, postdp, maxdepth); |
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305 | if (postdp) *expo += eaccum; |
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306 | |
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307 | break; |
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308 | } |
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309 | } |
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310 | |
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311 | // this relies greatly on the quality of the pow () |
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312 | // implementation of the platform, but a good |
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313 | // implementation is hard to beat. |
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314 | // (IEEE 754 conformant ones are required to be exact) |
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315 | if (postdp) *expo -= eaccum; |
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316 | *accum += uaccum * Perl_pow (10., *expo); |
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317 | *expo += eaccum; |
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318 | } |
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319 | |
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320 | static NV |
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321 | json_atof (const char *s) |
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322 | { |
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323 | NV accum = 0.; |
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324 | int expo = 0; |
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325 | int neg = 0; |
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326 | |
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327 | if (*s == '-') |
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328 | { |
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329 | ++s; |
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330 | neg = 1; |
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331 | } |
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332 | |
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333 | // a recursion depth of ten gives us >>500 bits |
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334 | json_atof_scan1 (s, &accum, &expo, 0, 10); |
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335 | |
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336 | return neg ? -accum : accum; |
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337 | } |
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338 | |
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339 | // target of scalar reference is bool? -1 == nope, 0 == false, 1 == true |
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340 | static int |
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341 | ref_bool_type (SV *sv) |
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342 | { |
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343 | svtype svt = SvTYPE (sv); |
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344 | |
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345 | if (svt < SVt_PVAV) |
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346 | { |
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347 | STRLEN len = 0; |
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348 | char *pv = svt ? SvPV (sv, len) : 0; |
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349 | |
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350 | if (len == 1) |
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351 | if (*pv == '1') |
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352 | return 1; |
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353 | else if (*pv == '0') |
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354 | return 0; |
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355 | } |
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356 | |
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357 | return -1; |
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358 | } |
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359 | |
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360 | // returns whether scalar is not a reference in the sense of allow_nonref |
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361 | static int |
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362 | json_nonref (SV *scalar) |
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363 | { |
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364 | if (!SvROK (scalar)) |
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365 | return 1; |
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366 | |
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367 | scalar = SvRV (scalar); |
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368 | |
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369 | if (SvTYPE (scalar) >= SVt_PVMG) |
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370 | { |
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371 | if (SvSTASH (scalar) == bool_stash) |
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372 | return 1; |
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373 | |
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374 | if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0) |
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375 | return 1; |
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376 | } |
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377 | |
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378 | return 0; |
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379 | } |
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380 | |
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381 | ///////////////////////////////////////////////////////////////////////////// |
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382 | // encoder |
27 | |
383 | |
28 | // structure used for encoding JSON |
384 | // structure used for encoding JSON |
29 | typedef struct |
385 | typedef struct |
30 | { |
386 | { |
31 | char *cur; |
387 | char *cur; // SvPVX (sv) + current output position |
32 | STRLEN len; // SvLEN (sv) |
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33 | char *end; // SvEND (sv) |
388 | char *end; // SvEND (sv) |
34 | SV *sv; |
389 | SV *sv; // result scalar |
35 | UV flags; |
390 | JSON json; |
36 | int max_recurse; |
391 | U32 indent; // indentation level |
37 | int indent; |
392 | UV limit; // escape character values >= this value when encoding |
38 | } enc_t; |
393 | } enc_t; |
39 | |
394 | |
40 | // structure used for decoding JSON |
395 | INLINE void |
41 | typedef struct |
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42 | { |
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43 | char *cur; |
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44 | char *end; |
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45 | const char *err; |
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46 | UV flags; |
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47 | } dec_t; |
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48 | |
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49 | static UV * |
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50 | SvJSON (SV *sv) |
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51 | { |
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52 | if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
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53 | croak ("object is not of type JSON::XS"); |
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54 | |
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55 | return &SvUVX (SvRV (sv)); |
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56 | } |
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57 | |
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58 | static void |
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59 | shrink (SV *sv) |
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60 | { |
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61 | sv_utf8_downgrade (sv, 1); |
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62 | #ifdef SvPV_shrink_to_cur |
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63 | SvPV_shrink_to_cur (sv); |
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64 | #endif |
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65 | } |
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66 | |
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67 | ///////////////////////////////////////////////////////////////////////////// |
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68 | |
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69 | static void |
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70 | need (enc_t *enc, STRLEN len) |
396 | need (enc_t *enc, STRLEN len) |
71 | { |
397 | { |
72 | if (enc->cur + len >= enc->end) |
398 | if (expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
73 | { |
399 | { |
74 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
400 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
75 | SvGROW (enc->sv, cur + len + 1); |
401 | char *buf = json_sv_grow (enc->sv, cur, len); |
76 | enc->cur = SvPVX (enc->sv) + cur; |
402 | enc->cur = buf + cur; |
77 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv); |
403 | enc->end = buf + SvLEN (enc->sv) - 1; |
78 | } |
404 | } |
79 | } |
405 | } |
80 | |
406 | |
81 | static void |
407 | INLINE void |
82 | encode_ch (enc_t *enc, char ch) |
408 | encode_ch (enc_t *enc, char ch) |
83 | { |
409 | { |
84 | need (enc, 1); |
410 | need (enc, 1); |
85 | *enc->cur++ = ch; |
411 | *enc->cur++ = ch; |
86 | } |
412 | } |
… | |
… | |
94 | |
420 | |
95 | while (str < end) |
421 | while (str < end) |
96 | { |
422 | { |
97 | unsigned char ch = *(unsigned char *)str; |
423 | unsigned char ch = *(unsigned char *)str; |
98 | |
424 | |
99 | if (ch >= 0x20 && ch < 0x80) // most common case |
425 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
100 | { |
426 | { |
101 | if (ch == '"') // but with slow exceptions |
427 | if (expect_false (ch == '"')) // but with slow exceptions |
102 | { |
428 | { |
103 | need (enc, len += 1); |
429 | need (enc, len + 1); |
104 | *enc->cur++ = '\\'; |
430 | *enc->cur++ = '\\'; |
105 | *enc->cur++ = '"'; |
431 | *enc->cur++ = '"'; |
106 | } |
432 | } |
107 | else if (ch == '\\') |
433 | else if (expect_false (ch == '\\')) |
108 | { |
434 | { |
109 | need (enc, len += 1); |
435 | need (enc, len + 1); |
110 | *enc->cur++ = '\\'; |
436 | *enc->cur++ = '\\'; |
111 | *enc->cur++ = '\\'; |
437 | *enc->cur++ = '\\'; |
112 | } |
438 | } |
113 | else |
439 | else |
114 | *enc->cur++ = ch; |
440 | *enc->cur++ = ch; |
… | |
… | |
117 | } |
443 | } |
118 | else |
444 | else |
119 | { |
445 | { |
120 | switch (ch) |
446 | switch (ch) |
121 | { |
447 | { |
122 | case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
448 | case '\010': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
123 | case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
449 | case '\011': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
124 | case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
450 | case '\012': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
125 | case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
451 | case '\014': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
126 | case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
452 | case '\015': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
127 | |
453 | |
128 | default: |
454 | default: |
129 | { |
455 | { |
130 | STRLEN clen; |
456 | STRLEN clen; |
131 | UV uch; |
457 | UV uch; |
132 | |
458 | |
133 | if (is_utf8) |
459 | if (is_utf8) |
134 | { |
460 | { |
135 | uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
461 | uch = decode_utf8 (str, end - str, &clen); |
136 | if (clen == (STRLEN)-1) |
462 | if (clen == (STRLEN)-1) |
137 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
463 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
138 | } |
464 | } |
139 | else |
465 | else |
140 | { |
466 | { |
141 | uch = ch; |
467 | uch = ch; |
142 | clen = 1; |
468 | clen = 1; |
143 | } |
469 | } |
144 | |
470 | |
145 | if (uch > 0x10FFFFUL) |
471 | if (uch < 0x80/*0x20*/ || uch >= enc->limit) |
146 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
147 | |
|
|
148 | if (uch < 0x80 || enc->flags & F_ASCII) |
|
|
149 | { |
472 | { |
150 | if (uch > 0xFFFFUL) |
473 | if (uch >= 0x10000UL) |
151 | { |
474 | { |
|
|
475 | if (uch >= 0x110000UL) |
|
|
476 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
|
|
477 | |
152 | need (enc, len += 11); |
478 | need (enc, len + 11); |
153 | sprintf (enc->cur, "\\u%04x\\u%04x", |
479 | sprintf (enc->cur, "\\u%04x\\u%04x", |
154 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
480 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
155 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
481 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
156 | enc->cur += 12; |
482 | enc->cur += 12; |
157 | } |
483 | } |
158 | else |
484 | else |
159 | { |
485 | { |
160 | static char hexdigit [16] = "0123456789abcdef"; |
|
|
161 | need (enc, len += 5); |
486 | need (enc, len + 5); |
162 | *enc->cur++ = '\\'; |
487 | *enc->cur++ = '\\'; |
163 | *enc->cur++ = 'u'; |
488 | *enc->cur++ = 'u'; |
164 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
489 | *enc->cur++ = PL_hexdigit [ uch >> 12 ]; |
165 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
490 | *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; |
166 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
491 | *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; |
167 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
492 | *enc->cur++ = PL_hexdigit [(uch >> 0) & 15]; |
168 | } |
493 | } |
169 | |
494 | |
|
|
495 | str += clen; |
|
|
496 | } |
|
|
497 | else if (enc->json.flags & F_LATIN1) |
|
|
498 | { |
|
|
499 | *enc->cur++ = uch; |
170 | str += clen; |
500 | str += clen; |
171 | } |
501 | } |
172 | else if (is_utf8) |
502 | else if (is_utf8) |
173 | { |
503 | { |
174 | need (enc, len += clen); |
504 | need (enc, len + clen); |
175 | do |
505 | do |
176 | { |
506 | { |
177 | *enc->cur++ = *str++; |
507 | *enc->cur++ = *str++; |
178 | } |
508 | } |
179 | while (--clen); |
509 | while (--clen); |
180 | } |
510 | } |
181 | else |
511 | else |
182 | { |
512 | { |
183 | need (enc, len += 10); // never more than 11 bytes needed |
513 | need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
184 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
514 | enc->cur = encode_utf8 (enc->cur, uch); |
185 | ++str; |
515 | ++str; |
186 | } |
516 | } |
187 | } |
517 | } |
188 | } |
518 | } |
189 | } |
519 | } |
190 | |
520 | |
191 | --len; |
521 | --len; |
192 | } |
522 | } |
193 | } |
523 | } |
194 | |
524 | |
195 | #define INDENT SB \ |
525 | INLINE void |
|
|
526 | encode_indent (enc_t *enc) |
|
|
527 | { |
196 | if (enc->flags & F_INDENT) \ |
528 | if (enc->json.flags & F_INDENT) |
197 | { \ |
529 | { |
198 | int i_; \ |
530 | int spaces = enc->indent * INDENT_STEP; |
199 | need (enc, enc->indent); \ |
531 | |
200 | for (i_ = enc->indent * 3; i_--; )\ |
532 | need (enc, spaces); |
|
|
533 | memset (enc->cur, ' ', spaces); |
|
|
534 | enc->cur += spaces; |
|
|
535 | } |
|
|
536 | } |
|
|
537 | |
|
|
538 | INLINE void |
|
|
539 | encode_space (enc_t *enc) |
|
|
540 | { |
|
|
541 | need (enc, 1); |
|
|
542 | encode_ch (enc, ' '); |
|
|
543 | } |
|
|
544 | |
|
|
545 | INLINE void |
|
|
546 | encode_nl (enc_t *enc) |
|
|
547 | { |
|
|
548 | if (enc->json.flags & F_INDENT) |
|
|
549 | { |
|
|
550 | need (enc, 1); |
201 | encode_ch (enc, ' '); \ |
551 | encode_ch (enc, '\n'); |
202 | } \ |
552 | } |
203 | SE |
553 | } |
204 | |
554 | |
205 | #define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE |
555 | INLINE void |
206 | #define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE |
556 | encode_comma (enc_t *enc) |
207 | #define COMMA SB \ |
557 | { |
208 | encode_ch (enc, ','); \ |
558 | encode_ch (enc, ','); |
|
|
559 | |
209 | if (enc->flags & F_INDENT) \ |
560 | if (enc->json.flags & F_INDENT) |
210 | NL; \ |
561 | encode_nl (enc); |
211 | else if (enc->flags & F_SPACE_AFTER) \ |
562 | else if (enc->json.flags & F_SPACE_AFTER) |
212 | SPACE; \ |
563 | encode_space (enc); |
213 | SE |
564 | } |
214 | |
565 | |
215 | static void encode_sv (enc_t *enc, SV *sv); |
566 | static void encode_sv (enc_t *enc, SV *sv); |
216 | |
567 | |
217 | static void |
568 | static void |
218 | encode_av (enc_t *enc, AV *av) |
569 | encode_av (enc_t *enc, AV *av) |
219 | { |
570 | { |
220 | int i, len = av_len (av); |
571 | int i, len = av_len (av); |
221 | |
572 | |
|
|
573 | if (enc->indent >= enc->json.max_depth) |
|
|
574 | croak (ERR_NESTING_EXCEEDED); |
|
|
575 | |
222 | encode_ch (enc, '['); NL; |
576 | encode_ch (enc, '['); |
223 | ++enc->indent; |
|
|
224 | |
577 | |
|
|
578 | if (len >= 0) |
|
|
579 | { |
|
|
580 | encode_nl (enc); ++enc->indent; |
|
|
581 | |
225 | for (i = 0; i <= len; ++i) |
582 | for (i = 0; i <= len; ++i) |
226 | { |
583 | { |
227 | INDENT; |
584 | SV **svp = av_fetch (av, i, 0); |
228 | encode_sv (enc, *av_fetch (av, i, 0)); |
|
|
229 | |
585 | |
|
|
586 | encode_indent (enc); |
|
|
587 | |
|
|
588 | if (svp) |
|
|
589 | encode_sv (enc, *svp); |
|
|
590 | else |
|
|
591 | encode_str (enc, "null", 4, 0); |
|
|
592 | |
230 | if (i < len) |
593 | if (i < len) |
231 | COMMA; |
594 | encode_comma (enc); |
232 | } |
595 | } |
233 | |
596 | |
234 | NL; |
597 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
598 | } |
235 | |
599 | |
236 | --enc->indent; |
|
|
237 | INDENT; encode_ch (enc, ']'); |
600 | encode_ch (enc, ']'); |
238 | } |
601 | } |
239 | |
602 | |
240 | static void |
603 | static void |
241 | encode_he (enc_t *enc, HE *he) |
604 | encode_hk (enc_t *enc, HE *he) |
242 | { |
605 | { |
243 | encode_ch (enc, '"'); |
606 | encode_ch (enc, '"'); |
244 | |
607 | |
245 | if (HeKLEN (he) == HEf_SVKEY) |
608 | if (HeKLEN (he) == HEf_SVKEY) |
246 | { |
609 | { |
247 | SV *sv = HeSVKEY (he); |
610 | SV *sv = HeSVKEY (he); |
248 | STRLEN len; |
611 | STRLEN len; |
249 | char *str; |
612 | char *str; |
250 | |
613 | |
251 | SvGETMAGIC (sv); |
614 | SvGETMAGIC (sv); |
252 | str = SvPV (sv, len); |
615 | str = SvPV (sv, len); |
253 | |
616 | |
254 | encode_str (enc, str, len, SvUTF8 (sv)); |
617 | encode_str (enc, str, len, SvUTF8 (sv)); |
255 | } |
618 | } |
256 | else |
619 | else |
257 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
620 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
258 | |
621 | |
259 | encode_ch (enc, '"'); |
622 | encode_ch (enc, '"'); |
260 | |
623 | |
261 | if (enc->flags & F_SPACE_BEFORE) SPACE; |
624 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
262 | encode_ch (enc, ':'); |
625 | encode_ch (enc, ':'); |
263 | if (enc->flags & F_SPACE_AFTER ) SPACE; |
626 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
264 | encode_sv (enc, HeVAL (he)); |
|
|
265 | } |
627 | } |
266 | |
628 | |
267 | // compare hash entries, used when all keys are bytestrings |
629 | // compare hash entries, used when all keys are bytestrings |
268 | static int |
630 | static int |
269 | he_cmp_fast (const void *a_, const void *b_) |
631 | he_cmp_fast (const void *a_, const void *b_) |
… | |
… | |
274 | HE *b = *(HE **)b_; |
636 | HE *b = *(HE **)b_; |
275 | |
637 | |
276 | STRLEN la = HeKLEN (a); |
638 | STRLEN la = HeKLEN (a); |
277 | STRLEN lb = HeKLEN (b); |
639 | STRLEN lb = HeKLEN (b); |
278 | |
640 | |
279 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
641 | if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la))) |
280 | cmp = la - lb; |
642 | cmp = lb - la; |
281 | |
643 | |
282 | return cmp; |
644 | return cmp; |
283 | } |
645 | } |
284 | |
646 | |
285 | // compare hash entries, used when some keys are sv's or utf-x |
647 | // compare hash entries, used when some keys are sv's or utf-x |
286 | static int |
648 | static int |
287 | he_cmp_slow (const void *a, const void *b) |
649 | he_cmp_slow (const void *a, const void *b) |
288 | { |
650 | { |
289 | return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
651 | return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a)); |
290 | } |
652 | } |
291 | |
653 | |
292 | static void |
654 | static void |
293 | encode_hv (enc_t *enc, HV *hv) |
655 | encode_hv (enc_t *enc, HV *hv) |
294 | { |
656 | { |
295 | int count, i; |
657 | HE *he; |
296 | |
658 | |
297 | encode_ch (enc, '{'); NL; ++enc->indent; |
659 | if (enc->indent >= enc->json.max_depth) |
|
|
660 | croak (ERR_NESTING_EXCEEDED); |
298 | |
661 | |
299 | if ((count = hv_iterinit (hv))) |
662 | encode_ch (enc, '{'); |
300 | { |
663 | |
301 | // for canonical output we have to sort by keys first |
664 | // for canonical output we have to sort by keys first |
302 | // actually, this is mostly due to the stupid so-called |
665 | // actually, this is mostly due to the stupid so-called |
303 | // security workaround added somewhere in 5.8.x. |
666 | // security workaround added somewhere in 5.8.x |
304 | // that randomises hash orderings |
667 | // that randomises hash orderings |
305 | if (enc->flags & F_CANONICAL) |
668 | if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv)) |
|
|
669 | { |
|
|
670 | int count = hv_iterinit (hv); |
|
|
671 | |
|
|
672 | if (SvMAGICAL (hv)) |
306 | { |
673 | { |
307 | HE *he, *hes [count]; |
674 | // need to count by iterating. could improve by dynamically building the vector below |
|
|
675 | // but I don't care for the speed of this special case. |
|
|
676 | // note also that we will run into undefined behaviour when the two iterations |
|
|
677 | // do not result in the same count, something I might care for in some later release. |
|
|
678 | |
|
|
679 | count = 0; |
|
|
680 | while (hv_iternext (hv)) |
|
|
681 | ++count; |
|
|
682 | |
|
|
683 | hv_iterinit (hv); |
|
|
684 | } |
|
|
685 | |
|
|
686 | if (count) |
|
|
687 | { |
308 | int fast = 1; |
688 | int i, fast = 1; |
|
|
689 | HE *hes_stack [STACK_HES]; |
|
|
690 | HE **hes = hes_stack; |
|
|
691 | |
|
|
692 | // allocate larger arrays on the heap |
|
|
693 | if (count > STACK_HES) |
|
|
694 | { |
|
|
695 | SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes))); |
|
|
696 | hes = (HE **)SvPVX (sv); |
|
|
697 | } |
309 | |
698 | |
310 | i = 0; |
699 | i = 0; |
311 | while ((he = hv_iternext (hv))) |
700 | while ((he = hv_iternext (hv))) |
312 | { |
701 | { |
313 | hes [i++] = he; |
702 | hes [i++] = he; |
… | |
… | |
335 | |
724 | |
336 | FREETMPS; |
725 | FREETMPS; |
337 | LEAVE; |
726 | LEAVE; |
338 | } |
727 | } |
339 | |
728 | |
340 | for (i = 0; i < count; ++i) |
729 | encode_nl (enc); ++enc->indent; |
|
|
730 | |
|
|
731 | while (count--) |
341 | { |
732 | { |
342 | INDENT; |
733 | encode_indent (enc); |
|
|
734 | he = hes [count]; |
343 | encode_he (enc, hes [i]); |
735 | encode_hk (enc, he); |
|
|
736 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
344 | |
737 | |
345 | if (i < count - 1) |
738 | if (count) |
346 | COMMA; |
739 | encode_comma (enc); |
347 | } |
740 | } |
348 | |
741 | |
349 | NL; |
742 | encode_nl (enc); --enc->indent; encode_indent (enc); |
350 | } |
743 | } |
|
|
744 | } |
|
|
745 | else |
|
|
746 | { |
|
|
747 | if (hv_iterinit (hv) || SvMAGICAL (hv)) |
|
|
748 | if ((he = hv_iternext (hv))) |
|
|
749 | { |
|
|
750 | encode_nl (enc); ++enc->indent; |
|
|
751 | |
|
|
752 | for (;;) |
|
|
753 | { |
|
|
754 | encode_indent (enc); |
|
|
755 | encode_hk (enc, he); |
|
|
756 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
|
|
757 | |
|
|
758 | if (!(he = hv_iternext (hv))) |
|
|
759 | break; |
|
|
760 | |
|
|
761 | encode_comma (enc); |
|
|
762 | } |
|
|
763 | |
|
|
764 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | encode_ch (enc, '}'); |
|
|
769 | } |
|
|
770 | |
|
|
771 | // encode objects, arrays and special \0=false and \1=true values. |
|
|
772 | static void |
|
|
773 | encode_rv (enc_t *enc, SV *sv) |
|
|
774 | { |
|
|
775 | svtype svt; |
|
|
776 | GV *method; |
|
|
777 | |
|
|
778 | SvGETMAGIC (sv); |
|
|
779 | svt = SvTYPE (sv); |
|
|
780 | |
|
|
781 | if (expect_false (SvOBJECT (sv))) |
|
|
782 | { |
|
|
783 | HV *stash = SvSTASH (sv); |
|
|
784 | |
|
|
785 | if (stash == bool_stash) |
|
|
786 | { |
|
|
787 | if (SvIV (sv)) encode_str (enc, "true" , 4, 0); |
|
|
788 | else encode_str (enc, "false", 5, 0); |
|
|
789 | } |
|
|
790 | else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0))) |
|
|
791 | { |
|
|
792 | int count; |
|
|
793 | dSP; |
|
|
794 | |
|
|
795 | ENTER; SAVETMPS; |
|
|
796 | PUSHMARK (SP); |
|
|
797 | EXTEND (SP, 2); |
|
|
798 | // we re-bless the reference to get overload and other niceties right |
|
|
799 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
800 | PUSHs (sv_json); |
|
|
801 | |
|
|
802 | PUTBACK; |
|
|
803 | count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
804 | SPAGAIN; |
|
|
805 | |
|
|
806 | // catch this surprisingly common error |
|
|
807 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
808 | croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
809 | |
|
|
810 | encode_ch (enc, '('); |
|
|
811 | encode_ch (enc, '"'); |
|
|
812 | encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash)); |
|
|
813 | encode_ch (enc, '"'); |
|
|
814 | encode_ch (enc, ')'); |
|
|
815 | encode_ch (enc, '['); |
|
|
816 | |
|
|
817 | if (count) |
|
|
818 | { |
|
|
819 | int i; |
|
|
820 | |
|
|
821 | for (i = 0; i < count - 1; ++i) |
|
|
822 | { |
|
|
823 | encode_sv (enc, SP[i + 1 - count]); |
|
|
824 | encode_ch (enc, ','); |
|
|
825 | } |
|
|
826 | |
|
|
827 | encode_sv (enc, TOPs); |
|
|
828 | SP -= count; |
|
|
829 | } |
|
|
830 | |
|
|
831 | PUTBACK; |
|
|
832 | |
|
|
833 | encode_ch (enc, ']'); |
|
|
834 | |
|
|
835 | FREETMPS; LEAVE; |
|
|
836 | } |
|
|
837 | else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0))) |
|
|
838 | { |
|
|
839 | dSP; |
|
|
840 | |
|
|
841 | ENTER; SAVETMPS; |
|
|
842 | PUSHMARK (SP); |
|
|
843 | // we re-bless the reference to get overload and other niceties right |
|
|
844 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
845 | |
|
|
846 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
847 | PUTBACK; |
|
|
848 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
849 | SPAGAIN; |
|
|
850 | |
|
|
851 | // catch this surprisingly common error |
|
|
852 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
853 | croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
854 | |
|
|
855 | sv = POPs; |
|
|
856 | PUTBACK; |
|
|
857 | |
|
|
858 | encode_sv (enc, sv); |
|
|
859 | |
|
|
860 | FREETMPS; LEAVE; |
|
|
861 | } |
|
|
862 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
863 | encode_str (enc, "null", 4, 0); |
351 | else |
864 | else |
352 | { |
865 | croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)", |
353 | SV *sv; |
866 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
354 | HE *he = hv_iternext (hv); |
867 | } |
355 | |
868 | else if (svt == SVt_PVHV) |
356 | for (;;) |
869 | encode_hv (enc, (HV *)sv); |
357 | { |
870 | else if (svt == SVt_PVAV) |
358 | INDENT; |
871 | encode_av (enc, (AV *)sv); |
359 | encode_he (enc, he); |
872 | else if (svt < SVt_PVAV) |
360 | |
|
|
361 | if (!(he = hv_iternext (hv))) |
|
|
362 | break; |
|
|
363 | |
|
|
364 | COMMA; |
|
|
365 | } |
|
|
366 | |
|
|
367 | NL; |
|
|
368 | } |
|
|
369 | } |
873 | { |
|
|
874 | int bool_type = ref_bool_type (sv); |
370 | |
875 | |
371 | --enc->indent; INDENT; encode_ch (enc, '}'); |
876 | if (bool_type == 1) |
|
|
877 | encode_str (enc, "true", 4, 0); |
|
|
878 | else if (bool_type == 0) |
|
|
879 | encode_str (enc, "false", 5, 0); |
|
|
880 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
881 | encode_str (enc, "null", 4, 0); |
|
|
882 | else |
|
|
883 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
884 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
885 | } |
|
|
886 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
887 | encode_str (enc, "null", 4, 0); |
|
|
888 | else |
|
|
889 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
890 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
372 | } |
891 | } |
373 | |
892 | |
374 | static void |
893 | static void |
375 | encode_sv (enc_t *enc, SV *sv) |
894 | encode_sv (enc_t *enc, SV *sv) |
376 | { |
895 | { |
… | |
… | |
384 | encode_str (enc, str, len, SvUTF8 (sv)); |
903 | encode_str (enc, str, len, SvUTF8 (sv)); |
385 | encode_ch (enc, '"'); |
904 | encode_ch (enc, '"'); |
386 | } |
905 | } |
387 | else if (SvNOKp (sv)) |
906 | else if (SvNOKp (sv)) |
388 | { |
907 | { |
|
|
908 | // trust that perl will do the right thing w.r.t. JSON syntax. |
389 | need (enc, NV_DIG + 32); |
909 | need (enc, NV_DIG + 32); |
390 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
910 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
391 | enc->cur += strlen (enc->cur); |
911 | enc->cur += strlen (enc->cur); |
392 | } |
912 | } |
393 | else if (SvIOKp (sv)) |
913 | else if (SvIOKp (sv)) |
394 | { |
914 | { |
|
|
915 | // we assume we can always read an IV as a UV and vice versa |
|
|
916 | // we assume two's complement |
|
|
917 | // we assume no aliasing issues in the union |
|
|
918 | if (SvIsUV (sv) ? SvUVX (sv) <= 59000 |
|
|
919 | : SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000) |
|
|
920 | { |
|
|
921 | // optimise the "small number case" |
|
|
922 | // code will likely be branchless and use only a single multiplication |
|
|
923 | // works for numbers up to 59074 |
|
|
924 | I32 i = SvIVX (sv); |
|
|
925 | U32 u; |
|
|
926 | char digit, nz = 0; |
|
|
927 | |
395 | need (enc, 64); |
928 | need (enc, 6); |
|
|
929 | |
|
|
930 | *enc->cur = '-'; enc->cur += i < 0 ? 1 : 0; |
|
|
931 | u = i < 0 ? -i : i; |
|
|
932 | |
|
|
933 | // convert to 4.28 fixed-point representation |
|
|
934 | u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits |
|
|
935 | |
|
|
936 | // now output digit by digit, each time masking out the integer part |
|
|
937 | // and multiplying by 5 while moving the decimal point one to the right, |
|
|
938 | // resulting in a net multiplication by 10. |
|
|
939 | // we always write the digit to memory but conditionally increment |
|
|
940 | // the pointer, to enable the use of conditional move instructions. |
|
|
941 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffffUL) * 5; |
|
|
942 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffffUL) * 5; |
|
|
943 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffffUL) * 5; |
|
|
944 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffffUL) * 5; |
|
|
945 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
|
|
946 | } |
|
|
947 | else |
|
|
948 | { |
|
|
949 | // large integer, use the (rather slow) snprintf way. |
|
|
950 | need (enc, IVUV_MAXCHARS); |
396 | enc->cur += |
951 | enc->cur += |
397 | SvIsUV(sv) |
952 | SvIsUV(sv) |
398 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
953 | ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) |
399 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
954 | : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); |
|
|
955 | } |
400 | } |
956 | } |
401 | else if (SvROK (sv)) |
957 | else if (SvROK (sv)) |
402 | { |
958 | encode_rv (enc, SvRV (sv)); |
403 | SV *rv = SvRV (sv); |
959 | else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) |
404 | |
|
|
405 | if (!--enc->max_recurse) |
|
|
406 | croak ("data structure too deep (hit recursion limit)"); |
|
|
407 | |
|
|
408 | switch (SvTYPE (rv)) |
|
|
409 | { |
|
|
410 | case SVt_PVAV: encode_av (enc, (AV *)rv); break; |
|
|
411 | case SVt_PVHV: encode_hv (enc, (HV *)rv); break; |
|
|
412 | |
|
|
413 | default: |
|
|
414 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
415 | SvPV_nolen (sv)); |
|
|
416 | } |
|
|
417 | } |
|
|
418 | else if (!SvOK (sv)) |
|
|
419 | encode_str (enc, "null", 4, 0); |
960 | encode_str (enc, "null", 4, 0); |
420 | else |
961 | else |
421 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
962 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data", |
422 | SvPV_nolen (sv), SvFLAGS (sv)); |
963 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
423 | } |
964 | } |
424 | |
965 | |
425 | static SV * |
966 | static SV * |
426 | encode_json (SV *scalar, UV flags) |
967 | encode_json (SV *scalar, JSON *json) |
427 | { |
968 | { |
|
|
969 | enc_t enc; |
|
|
970 | |
428 | if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
971 | if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar)) |
429 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
972 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
430 | |
973 | |
431 | enc_t enc; |
974 | enc.json = *json; |
432 | enc.flags = flags; |
|
|
433 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
975 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
434 | enc.cur = SvPVX (enc.sv); |
976 | enc.cur = SvPVX (enc.sv); |
435 | enc.end = SvEND (enc.sv); |
977 | enc.end = SvEND (enc.sv); |
436 | enc.max_recurse = 0; |
|
|
437 | enc.indent = 0; |
978 | enc.indent = 0; |
|
|
979 | enc.limit = enc.json.flags & F_ASCII ? 0x000080UL |
|
|
980 | : enc.json.flags & F_LATIN1 ? 0x000100UL |
|
|
981 | : 0x110000UL; |
438 | |
982 | |
439 | SvPOK_only (enc.sv); |
983 | SvPOK_only (enc.sv); |
440 | encode_sv (&enc, scalar); |
984 | encode_sv (&enc, scalar); |
|
|
985 | encode_nl (&enc); |
441 | |
986 | |
|
|
987 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
988 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
|
|
989 | |
442 | if (!(flags & (F_ASCII | F_UTF8))) |
990 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
443 | SvUTF8_on (enc.sv); |
991 | SvUTF8_on (enc.sv); |
444 | |
992 | |
445 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
446 | |
|
|
447 | if (enc.flags & F_SHRINK) |
993 | if (enc.json.flags & F_SHRINK) |
448 | shrink (enc.sv); |
994 | shrink (enc.sv); |
449 | |
995 | |
450 | return enc.sv; |
996 | return enc.sv; |
451 | } |
997 | } |
452 | |
998 | |
453 | ///////////////////////////////////////////////////////////////////////////// |
999 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1000 | // decoder |
454 | |
1001 | |
455 | #define WS \ |
1002 | // structure used for decoding JSON |
|
|
1003 | typedef struct |
|
|
1004 | { |
|
|
1005 | char *cur; // current parser pointer |
|
|
1006 | char *end; // end of input string |
|
|
1007 | const char *err; // parse error, if != 0 |
|
|
1008 | JSON json; |
|
|
1009 | U32 depth; // recursion depth |
|
|
1010 | U32 maxdepth; // recursion depth limit |
|
|
1011 | } dec_t; |
|
|
1012 | |
|
|
1013 | INLINE void |
|
|
1014 | decode_comment (dec_t *dec) |
|
|
1015 | { |
|
|
1016 | // only '#'-style comments allowed a.t.m. |
|
|
1017 | |
|
|
1018 | while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d) |
|
|
1019 | ++dec->cur; |
|
|
1020 | } |
|
|
1021 | |
|
|
1022 | INLINE void |
|
|
1023 | decode_ws (dec_t *dec) |
|
|
1024 | { |
456 | for (;;) \ |
1025 | for (;;) |
457 | { \ |
1026 | { |
458 | char ch = *dec->cur; \ |
1027 | char ch = *dec->cur; |
|
|
1028 | |
459 | if (ch > 0x20 \ |
1029 | if (ch > 0x20) |
|
|
1030 | { |
|
|
1031 | if (expect_false (ch == '#')) |
|
|
1032 | { |
|
|
1033 | if (dec->json.flags & F_RELAXED) |
|
|
1034 | decode_comment (dec); |
|
|
1035 | else |
|
|
1036 | break; |
|
|
1037 | } |
|
|
1038 | else |
|
|
1039 | break; |
|
|
1040 | } |
460 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ |
1041 | else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09) |
461 | break; \ |
1042 | break; // parse error, but let higher level handle it, gives better error messages |
|
|
1043 | else |
462 | ++dec->cur; \ |
1044 | ++dec->cur; |
463 | } |
1045 | } |
|
|
1046 | } |
464 | |
1047 | |
465 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
1048 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
|
|
1049 | |
466 | #define EXPECT_CH(ch) SB \ |
1050 | #define EXPECT_CH(ch) SB \ |
467 | if (*dec->cur != ch) \ |
1051 | if (*dec->cur != ch) \ |
468 | ERR (# ch " expected"); \ |
1052 | ERR (# ch " expected"); \ |
469 | ++dec->cur; \ |
1053 | ++dec->cur; \ |
470 | SE |
1054 | SE |
471 | |
1055 | |
|
|
1056 | #define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED) |
|
|
1057 | #define DEC_DEC_DEPTH --dec->depth |
|
|
1058 | |
472 | static SV *decode_sv (dec_t *dec); |
1059 | static SV *decode_sv (dec_t *dec); |
473 | |
1060 | |
474 | static signed char decode_hexdigit[256]; |
1061 | static signed char decode_hexdigit[256]; |
475 | |
1062 | |
476 | static UV |
1063 | static UV |
477 | decode_4hex (dec_t *dec) |
1064 | decode_4hex (dec_t *dec) |
478 | { |
1065 | { |
479 | signed char d1, d2, d3, d4; |
1066 | signed char d1, d2, d3, d4; |
|
|
1067 | unsigned char *cur = (unsigned char *)dec->cur; |
480 | |
1068 | |
481 | d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]]; |
1069 | d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected"); |
482 | if (d1 < 0) ERR ("four hexadecimal digits expected"); |
1070 | d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected"); |
483 | d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]]; |
1071 | d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected"); |
484 | if (d2 < 0) ERR ("four hexadecimal digits expected"); |
1072 | d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected"); |
485 | d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]]; |
|
|
486 | if (d3 < 0) ERR ("four hexadecimal digits expected"); |
|
|
487 | d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]]; |
|
|
488 | if (d4 < 0) ERR ("four hexadecimal digits expected"); |
|
|
489 | |
1073 | |
490 | dec->cur += 4; |
1074 | dec->cur += 4; |
491 | |
1075 | |
492 | return ((UV)d1) << 12 |
1076 | return ((UV)d1) << 12 |
493 | | ((UV)d2) << 8 |
1077 | | ((UV)d2) << 8 |
… | |
… | |
496 | |
1080 | |
497 | fail: |
1081 | fail: |
498 | return (UV)-1; |
1082 | return (UV)-1; |
499 | } |
1083 | } |
500 | |
1084 | |
501 | #define APPEND_GROW(n) SB \ |
|
|
502 | if (cur + (n) >= end) \ |
|
|
503 | { \ |
|
|
504 | STRLEN ofs = cur - SvPVX (sv); \ |
|
|
505 | SvGROW (sv, ofs + (n) + 1); \ |
|
|
506 | cur = SvPVX (sv) + ofs; \ |
|
|
507 | end = SvEND (sv); \ |
|
|
508 | } \ |
|
|
509 | SE |
|
|
510 | |
|
|
511 | #define APPEND_CH(ch) SB \ |
|
|
512 | APPEND_GROW (1); \ |
|
|
513 | *cur++ = (ch); \ |
|
|
514 | SE |
|
|
515 | |
|
|
516 | static SV * |
1085 | static SV * |
517 | decode_str (dec_t *dec) |
1086 | decode_str (dec_t *dec) |
518 | { |
1087 | { |
519 | SV *sv = NEWSV (0,2); |
1088 | SV *sv = 0; |
520 | int utf8 = 0; |
1089 | int utf8 = 0; |
521 | char *cur = SvPVX (sv); |
1090 | char *dec_cur = dec->cur; |
522 | char *end = SvEND (sv); |
|
|
523 | |
1091 | |
524 | for (;;) |
1092 | do |
525 | { |
1093 | { |
526 | unsigned char ch = *(unsigned char *)dec->cur; |
1094 | char buf [SHORT_STRING_LEN + UTF8_MAXBYTES]; |
|
|
1095 | char *cur = buf; |
527 | |
1096 | |
528 | if (ch == '"') |
1097 | do |
529 | break; |
|
|
530 | else if (ch == '\\') |
|
|
531 | { |
1098 | { |
532 | switch (*++dec->cur) |
1099 | unsigned char ch = *(unsigned char *)dec_cur++; |
|
|
1100 | |
|
|
1101 | if (expect_false (ch == '"')) |
533 | { |
1102 | { |
534 | case '\\': |
1103 | --dec_cur; |
535 | case '/': |
1104 | break; |
536 | case '"': APPEND_CH (*dec->cur++); break; |
1105 | } |
537 | |
1106 | else if (expect_false (ch == '\\')) |
538 | case 'b': APPEND_CH ('\010'); ++dec->cur; break; |
1107 | { |
539 | case 't': APPEND_CH ('\011'); ++dec->cur; break; |
1108 | switch (*dec_cur) |
540 | case 'n': APPEND_CH ('\012'); ++dec->cur; break; |
|
|
541 | case 'f': APPEND_CH ('\014'); ++dec->cur; break; |
|
|
542 | case 'r': APPEND_CH ('\015'); ++dec->cur; break; |
|
|
543 | |
|
|
544 | case 'u': |
|
|
545 | { |
1109 | { |
546 | UV lo, hi; |
1110 | case '\\': |
547 | ++dec->cur; |
1111 | case '/': |
|
|
1112 | case '"': *cur++ = *dec_cur++; break; |
548 | |
1113 | |
549 | hi = decode_4hex (dec); |
1114 | case 'b': ++dec_cur; *cur++ = '\010'; break; |
550 | if (hi == (UV)-1) |
1115 | case 't': ++dec_cur; *cur++ = '\011'; break; |
551 | goto fail; |
1116 | case 'n': ++dec_cur; *cur++ = '\012'; break; |
|
|
1117 | case 'f': ++dec_cur; *cur++ = '\014'; break; |
|
|
1118 | case 'r': ++dec_cur; *cur++ = '\015'; break; |
552 | |
1119 | |
553 | // possibly a surrogate pair |
1120 | case 'u': |
554 | if (hi >= 0xd800 && hi < 0xdc00) |
|
|
555 | { |
1121 | { |
556 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
1122 | UV lo, hi; |
557 | ERR ("missing low surrogate character in surrogate pair"); |
1123 | ++dec_cur; |
558 | |
1124 | |
559 | dec->cur += 2; |
1125 | dec->cur = dec_cur; |
560 | |
|
|
561 | lo = decode_4hex (dec); |
1126 | hi = decode_4hex (dec); |
|
|
1127 | dec_cur = dec->cur; |
562 | if (lo == (UV)-1) |
1128 | if (hi == (UV)-1) |
563 | goto fail; |
1129 | goto fail; |
564 | |
1130 | |
|
|
1131 | // possibly a surrogate pair |
|
|
1132 | if (hi >= 0xd800) |
|
|
1133 | if (hi < 0xdc00) |
|
|
1134 | { |
|
|
1135 | if (dec_cur [0] != '\\' || dec_cur [1] != 'u') |
|
|
1136 | ERR ("missing low surrogate character in surrogate pair"); |
|
|
1137 | |
|
|
1138 | dec_cur += 2; |
|
|
1139 | |
|
|
1140 | dec->cur = dec_cur; |
|
|
1141 | lo = decode_4hex (dec); |
|
|
1142 | dec_cur = dec->cur; |
|
|
1143 | if (lo == (UV)-1) |
|
|
1144 | goto fail; |
|
|
1145 | |
565 | if (lo < 0xdc00 || lo >= 0xe000) |
1146 | if (lo < 0xdc00 || lo >= 0xe000) |
566 | ERR ("surrogate pair expected"); |
1147 | ERR ("surrogate pair expected"); |
567 | |
1148 | |
568 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
1149 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
|
|
1150 | } |
|
|
1151 | else if (hi < 0xe000) |
|
|
1152 | ERR ("missing high surrogate character in surrogate pair"); |
|
|
1153 | |
|
|
1154 | if (hi >= 0x80) |
|
|
1155 | { |
|
|
1156 | utf8 = 1; |
|
|
1157 | |
|
|
1158 | cur = encode_utf8 (cur, hi); |
|
|
1159 | } |
|
|
1160 | else |
|
|
1161 | *cur++ = hi; |
569 | } |
1162 | } |
570 | else if (hi >= 0xdc00 && hi < 0xe000) |
|
|
571 | ERR ("missing high surrogate character in surrogate pair"); |
|
|
572 | |
|
|
573 | if (hi >= 0x80) |
|
|
574 | { |
1163 | break; |
575 | utf8 = 1; |
|
|
576 | |
1164 | |
577 | APPEND_GROW (4); // at most 4 bytes for 21 bits |
|
|
578 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
|
|
579 | } |
|
|
580 | else |
1165 | default: |
581 | APPEND_CH (hi); |
1166 | --dec_cur; |
|
|
1167 | ERR ("illegal backslash escape sequence in string"); |
582 | } |
1168 | } |
583 | break; |
1169 | } |
|
|
1170 | else if (expect_true (ch >= 0x20 && ch < 0x80)) |
|
|
1171 | *cur++ = ch; |
|
|
1172 | else if (ch >= 0x80) |
|
|
1173 | { |
|
|
1174 | STRLEN clen; |
584 | |
1175 | |
585 | default: |
|
|
586 | --dec->cur; |
1176 | --dec_cur; |
587 | ERR ("illegal backslash escape sequence in string"); |
1177 | |
|
|
1178 | decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
|
|
1179 | if (clen == (STRLEN)-1) |
|
|
1180 | ERR ("malformed UTF-8 character in JSON string"); |
|
|
1181 | |
|
|
1182 | do |
|
|
1183 | *cur++ = *dec_cur++; |
|
|
1184 | while (--clen); |
|
|
1185 | |
|
|
1186 | utf8 = 1; |
|
|
1187 | } |
|
|
1188 | else if (ch == '\t' && dec->json.flags & F_RELAXED) |
|
|
1189 | *cur++ = ch; |
|
|
1190 | else |
|
|
1191 | { |
|
|
1192 | --dec_cur; |
|
|
1193 | |
|
|
1194 | if (!ch) |
|
|
1195 | ERR ("unexpected end of string while parsing JSON string"); |
|
|
1196 | else |
|
|
1197 | ERR ("invalid character encountered while parsing JSON string"); |
588 | } |
1198 | } |
589 | } |
1199 | } |
590 | else if (ch >= 0x20 && ch <= 0x7f) |
1200 | while (cur < buf + SHORT_STRING_LEN); |
591 | APPEND_CH (*dec->cur++); |
1201 | |
592 | else if (ch >= 0x80) |
|
|
593 | { |
1202 | { |
594 | STRLEN clen; |
1203 | STRLEN len = cur - buf; |
595 | UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
|
|
596 | if (clen == (STRLEN)-1) |
|
|
597 | ERR ("malformed UTF-8 character in JSON string"); |
|
|
598 | |
1204 | |
599 | APPEND_GROW (clen); |
1205 | if (sv) |
600 | do |
|
|
601 | { |
1206 | { |
602 | *cur++ = *dec->cur++; |
1207 | STRLEN cur = SvCUR (sv); |
|
|
1208 | |
|
|
1209 | if (SvLEN (sv) - cur <= len) |
|
|
1210 | json_sv_grow (sv, cur, len); |
|
|
1211 | |
|
|
1212 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
|
|
1213 | SvCUR_set (sv, SvCUR (sv) + len); |
603 | } |
1214 | } |
604 | while (--clen); |
|
|
605 | |
|
|
606 | utf8 = 1; |
|
|
607 | } |
|
|
608 | else if (dec->cur == dec->end) |
|
|
609 | ERR ("unexpected end of string while parsing json string"); |
|
|
610 | else |
1215 | else |
611 | ERR ("invalid character encountered"); |
1216 | sv = newSVpvn (buf, len); |
612 | } |
1217 | } |
|
|
1218 | } |
|
|
1219 | while (*dec_cur != '"'); |
613 | |
1220 | |
614 | ++dec->cur; |
1221 | ++dec_cur; |
615 | |
1222 | |
616 | SvCUR_set (sv, cur - SvPVX (sv)); |
1223 | if (sv) |
617 | |
1224 | { |
618 | SvPOK_only (sv); |
1225 | SvPOK_only (sv); |
619 | *SvEND (sv) = 0; |
1226 | *SvEND (sv) = 0; |
620 | |
1227 | |
621 | if (utf8) |
1228 | if (utf8) |
622 | SvUTF8_on (sv); |
1229 | SvUTF8_on (sv); |
|
|
1230 | } |
|
|
1231 | else |
|
|
1232 | sv = newSVpvn ("", 0); |
623 | |
1233 | |
624 | if (dec->flags & F_SHRINK) |
1234 | dec->cur = dec_cur; |
625 | shrink (sv); |
|
|
626 | |
|
|
627 | return sv; |
1235 | return sv; |
628 | |
1236 | |
629 | fail: |
1237 | fail: |
630 | SvREFCNT_dec (sv); |
1238 | dec->cur = dec_cur; |
631 | return 0; |
1239 | return 0; |
632 | } |
1240 | } |
633 | |
1241 | |
634 | static SV * |
1242 | static SV * |
635 | decode_num (dec_t *dec) |
1243 | decode_num (dec_t *dec) |
… | |
… | |
693 | is_nv = 1; |
1301 | is_nv = 1; |
694 | } |
1302 | } |
695 | |
1303 | |
696 | if (!is_nv) |
1304 | if (!is_nv) |
697 | { |
1305 | { |
698 | UV uv; |
1306 | int len = dec->cur - start; |
699 | int numtype = grok_number (start, dec->cur - start, &uv); |
1307 | |
700 | if (numtype & IS_NUMBER_IN_UV) |
1308 | // special case the rather common 1..5-digit-int case |
701 | if (numtype & IS_NUMBER_NEG) |
1309 | if (*start == '-') |
|
|
1310 | switch (len) |
702 | { |
1311 | { |
703 | if (uv < (UV)IV_MIN) |
1312 | case 2: return newSViv (-(IV)( start [1] - '0' * 1)); |
704 | return newSViv (-(IV)uv); |
1313 | case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11)); |
|
|
1314 | case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
|
|
1315 | case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
|
|
1316 | case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111)); |
705 | } |
1317 | } |
|
|
1318 | else |
|
|
1319 | switch (len) |
|
|
1320 | { |
|
|
1321 | case 1: return newSViv ( start [0] - '0' * 1); |
|
|
1322 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
|
|
1323 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
|
|
1324 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
1325 | case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111); |
|
|
1326 | } |
|
|
1327 | |
|
|
1328 | { |
|
|
1329 | UV uv; |
|
|
1330 | int numtype = grok_number (start, len, &uv); |
|
|
1331 | if (numtype & IS_NUMBER_IN_UV) |
|
|
1332 | if (numtype & IS_NUMBER_NEG) |
|
|
1333 | { |
|
|
1334 | if (uv < (UV)IV_MIN) |
|
|
1335 | return newSViv (-(IV)uv); |
|
|
1336 | } |
706 | else |
1337 | else |
707 | return newSVuv (uv); |
1338 | return newSVuv (uv); |
708 | } |
1339 | } |
709 | |
1340 | |
|
|
1341 | len -= *start == '-' ? 1 : 0; |
|
|
1342 | |
|
|
1343 | // does not fit into IV or UV, try NV |
|
|
1344 | if (len <= NV_DIG) |
|
|
1345 | // fits into NV without loss of precision |
|
|
1346 | return newSVnv (json_atof (start)); |
|
|
1347 | |
|
|
1348 | // everything else fails, convert it to a string |
|
|
1349 | return newSVpvn (start, dec->cur - start); |
|
|
1350 | } |
|
|
1351 | |
|
|
1352 | // loss of precision here |
710 | return newSVnv (Atof (start)); |
1353 | return newSVnv (json_atof (start)); |
711 | |
1354 | |
712 | fail: |
1355 | fail: |
713 | return 0; |
1356 | return 0; |
714 | } |
1357 | } |
715 | |
1358 | |
716 | static SV * |
1359 | static SV * |
717 | decode_av (dec_t *dec) |
1360 | decode_av (dec_t *dec) |
718 | { |
1361 | { |
719 | AV *av = newAV (); |
1362 | AV *av = newAV (); |
720 | |
1363 | |
721 | WS; |
1364 | DEC_INC_DEPTH; |
|
|
1365 | decode_ws (dec); |
|
|
1366 | |
722 | if (*dec->cur == ']') |
1367 | if (*dec->cur == ']') |
723 | ++dec->cur; |
1368 | ++dec->cur; |
724 | else |
1369 | else |
725 | for (;;) |
1370 | for (;;) |
726 | { |
1371 | { |
… | |
… | |
730 | if (!value) |
1375 | if (!value) |
731 | goto fail; |
1376 | goto fail; |
732 | |
1377 | |
733 | av_push (av, value); |
1378 | av_push (av, value); |
734 | |
1379 | |
735 | WS; |
1380 | decode_ws (dec); |
736 | |
1381 | |
737 | if (*dec->cur == ']') |
1382 | if (*dec->cur == ']') |
738 | { |
1383 | { |
739 | ++dec->cur; |
1384 | ++dec->cur; |
740 | break; |
1385 | break; |
741 | } |
1386 | } |
742 | |
1387 | |
743 | if (*dec->cur != ',') |
1388 | if (*dec->cur != ',') |
744 | ERR (", or ] expected while parsing array"); |
1389 | ERR (", or ] expected while parsing array"); |
745 | |
1390 | |
746 | ++dec->cur; |
1391 | ++dec->cur; |
|
|
1392 | |
|
|
1393 | decode_ws (dec); |
|
|
1394 | |
|
|
1395 | if (*dec->cur == ']' && dec->json.flags & F_RELAXED) |
|
|
1396 | { |
|
|
1397 | ++dec->cur; |
|
|
1398 | break; |
|
|
1399 | } |
747 | } |
1400 | } |
748 | |
1401 | |
|
|
1402 | DEC_DEC_DEPTH; |
749 | return newRV_noinc ((SV *)av); |
1403 | return newRV_noinc ((SV *)av); |
750 | |
1404 | |
751 | fail: |
1405 | fail: |
752 | SvREFCNT_dec (av); |
1406 | SvREFCNT_dec (av); |
|
|
1407 | DEC_DEC_DEPTH; |
753 | return 0; |
1408 | return 0; |
754 | } |
1409 | } |
755 | |
1410 | |
756 | static SV * |
1411 | static SV * |
757 | decode_hv (dec_t *dec) |
1412 | decode_hv (dec_t *dec) |
758 | { |
1413 | { |
|
|
1414 | SV *sv; |
759 | HV *hv = newHV (); |
1415 | HV *hv = newHV (); |
760 | |
1416 | |
761 | WS; |
1417 | DEC_INC_DEPTH; |
|
|
1418 | decode_ws (dec); |
|
|
1419 | |
762 | if (*dec->cur == '}') |
1420 | if (*dec->cur == '}') |
763 | ++dec->cur; |
1421 | ++dec->cur; |
764 | else |
1422 | else |
765 | for (;;) |
1423 | for (;;) |
766 | { |
1424 | { |
767 | SV *key, *value; |
|
|
768 | |
|
|
769 | WS; EXPECT_CH ('"'); |
1425 | EXPECT_CH ('"'); |
770 | |
1426 | |
771 | key = decode_str (dec); |
1427 | // heuristic: assume that |
772 | if (!key) |
1428 | // a) decode_str + hv_store_ent are abysmally slow. |
773 | goto fail; |
1429 | // b) most hash keys are short, simple ascii text. |
|
|
1430 | // => try to "fast-match" such strings to avoid |
|
|
1431 | // the overhead of decode_str + hv_store_ent. |
|
|
1432 | { |
|
|
1433 | SV *value; |
|
|
1434 | char *p = dec->cur; |
|
|
1435 | char *e = p + 24; // only try up to 24 bytes |
774 | |
1436 | |
775 | WS; EXPECT_CH (':'); |
1437 | for (;;) |
776 | |
|
|
777 | value = decode_sv (dec); |
|
|
778 | if (!value) |
|
|
779 | { |
1438 | { |
|
|
1439 | // the >= 0x80 is false on most architectures |
|
|
1440 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
|
|
1441 | { |
|
|
1442 | // slow path, back up and use decode_str |
|
|
1443 | SV *key = decode_str (dec); |
|
|
1444 | if (!key) |
|
|
1445 | goto fail; |
|
|
1446 | |
|
|
1447 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1448 | |
|
|
1449 | decode_ws (dec); |
|
|
1450 | value = decode_sv (dec); |
|
|
1451 | if (!value) |
|
|
1452 | { |
|
|
1453 | SvREFCNT_dec (key); |
|
|
1454 | goto fail; |
|
|
1455 | } |
|
|
1456 | |
|
|
1457 | hv_store_ent (hv, key, value, 0); |
780 | SvREFCNT_dec (key); |
1458 | SvREFCNT_dec (key); |
|
|
1459 | |
|
|
1460 | break; |
|
|
1461 | } |
|
|
1462 | else if (*p == '"') |
|
|
1463 | { |
|
|
1464 | // fast path, got a simple key |
|
|
1465 | char *key = dec->cur; |
|
|
1466 | int len = p - key; |
|
|
1467 | dec->cur = p + 1; |
|
|
1468 | |
|
|
1469 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1470 | |
|
|
1471 | decode_ws (dec); |
|
|
1472 | value = decode_sv (dec); |
|
|
1473 | if (!value) |
781 | goto fail; |
1474 | goto fail; |
|
|
1475 | |
|
|
1476 | hv_store (hv, key, len, value, 0); |
|
|
1477 | |
|
|
1478 | break; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | ++p; |
782 | } |
1482 | } |
783 | |
|
|
784 | //TODO: optimise |
|
|
785 | hv_store_ent (hv, key, value, 0); |
|
|
786 | |
|
|
787 | WS; |
1483 | } |
|
|
1484 | |
|
|
1485 | decode_ws (dec); |
788 | |
1486 | |
789 | if (*dec->cur == '}') |
1487 | if (*dec->cur == '}') |
790 | { |
1488 | { |
791 | ++dec->cur; |
1489 | ++dec->cur; |
792 | break; |
1490 | break; |
… | |
… | |
794 | |
1492 | |
795 | if (*dec->cur != ',') |
1493 | if (*dec->cur != ',') |
796 | ERR (", or } expected while parsing object/hash"); |
1494 | ERR (", or } expected while parsing object/hash"); |
797 | |
1495 | |
798 | ++dec->cur; |
1496 | ++dec->cur; |
|
|
1497 | |
|
|
1498 | decode_ws (dec); |
|
|
1499 | |
|
|
1500 | if (*dec->cur == '}' && dec->json.flags & F_RELAXED) |
|
|
1501 | { |
|
|
1502 | ++dec->cur; |
|
|
1503 | break; |
|
|
1504 | } |
799 | } |
1505 | } |
800 | |
1506 | |
|
|
1507 | DEC_DEC_DEPTH; |
801 | return newRV_noinc ((SV *)hv); |
1508 | sv = newRV_noinc ((SV *)hv); |
|
|
1509 | |
|
|
1510 | // check filter callbacks |
|
|
1511 | if (expect_false (dec->json.flags & F_HOOK)) |
|
|
1512 | { |
|
|
1513 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
|
|
1514 | { |
|
|
1515 | HE *cb, *he; |
|
|
1516 | |
|
|
1517 | hv_iterinit (hv); |
|
|
1518 | he = hv_iternext (hv); |
|
|
1519 | hv_iterinit (hv); |
|
|
1520 | |
|
|
1521 | // the next line creates a mortal sv each time it's called. |
|
|
1522 | // might want to optimise this for common cases. |
|
|
1523 | cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
1524 | |
|
|
1525 | if (cb) |
|
|
1526 | { |
|
|
1527 | dSP; |
|
|
1528 | int count; |
|
|
1529 | |
|
|
1530 | ENTER; SAVETMPS; |
|
|
1531 | PUSHMARK (SP); |
|
|
1532 | XPUSHs (HeVAL (he)); |
|
|
1533 | sv_2mortal (sv); |
|
|
1534 | |
|
|
1535 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
1536 | |
|
|
1537 | if (count == 1) |
|
|
1538 | { |
|
|
1539 | sv = newSVsv (POPs); |
|
|
1540 | PUTBACK; |
|
|
1541 | FREETMPS; LEAVE; |
|
|
1542 | return sv; |
|
|
1543 | } |
|
|
1544 | else if (count) |
|
|
1545 | croak ("filter_json_single_key_object callbacks must not return more than one scalar"); |
|
|
1546 | |
|
|
1547 | PUTBACK; |
|
|
1548 | |
|
|
1549 | SvREFCNT_inc (sv); |
|
|
1550 | |
|
|
1551 | FREETMPS; LEAVE; |
|
|
1552 | } |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | if (dec->json.cb_object) |
|
|
1556 | { |
|
|
1557 | dSP; |
|
|
1558 | int count; |
|
|
1559 | |
|
|
1560 | ENTER; SAVETMPS; |
|
|
1561 | PUSHMARK (SP); |
|
|
1562 | XPUSHs (sv_2mortal (sv)); |
|
|
1563 | |
|
|
1564 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
|
|
1565 | |
|
|
1566 | if (count == 1) |
|
|
1567 | sv = newSVsv (POPs); |
|
|
1568 | else if (count == 0) |
|
|
1569 | SvREFCNT_inc (sv); |
|
|
1570 | else |
|
|
1571 | croak ("filter_json_object callbacks must not return more than one scalar"); |
|
|
1572 | |
|
|
1573 | PUTBACK; |
|
|
1574 | |
|
|
1575 | FREETMPS; LEAVE; |
|
|
1576 | } |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | return sv; |
802 | |
1580 | |
803 | fail: |
1581 | fail: |
804 | SvREFCNT_dec (hv); |
1582 | SvREFCNT_dec (hv); |
|
|
1583 | DEC_DEC_DEPTH; |
|
|
1584 | return 0; |
|
|
1585 | } |
|
|
1586 | |
|
|
1587 | static SV * |
|
|
1588 | decode_tag (dec_t *dec) |
|
|
1589 | { |
|
|
1590 | SV *tag = 0; |
|
|
1591 | SV *val = 0; |
|
|
1592 | |
|
|
1593 | if (!(dec->json.flags & F_ALLOW_TAGS)) |
|
|
1594 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
|
|
1595 | |
|
|
1596 | ++dec->cur; |
|
|
1597 | |
|
|
1598 | decode_ws (dec); |
|
|
1599 | |
|
|
1600 | tag = decode_sv (dec); |
|
|
1601 | if (!tag) |
|
|
1602 | goto fail; |
|
|
1603 | |
|
|
1604 | if (!SvPOK (tag)) |
|
|
1605 | ERR ("malformed JSON string, (tag) must be a string"); |
|
|
1606 | |
|
|
1607 | decode_ws (dec); |
|
|
1608 | |
|
|
1609 | if (*dec->cur != ')') |
|
|
1610 | ERR (") expected after tag"); |
|
|
1611 | |
|
|
1612 | ++dec->cur; |
|
|
1613 | |
|
|
1614 | decode_ws (dec); |
|
|
1615 | |
|
|
1616 | val = decode_sv (dec); |
|
|
1617 | if (!val) |
|
|
1618 | goto fail; |
|
|
1619 | |
|
|
1620 | if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV) |
|
|
1621 | ERR ("malformed JSON string, tag value must be an array"); |
|
|
1622 | |
|
|
1623 | { |
|
|
1624 | AV *av = (AV *)SvRV (val); |
|
|
1625 | int i, len = av_len (av) + 1; |
|
|
1626 | HV *stash = gv_stashsv (tag, 0); |
|
|
1627 | SV *sv; |
|
|
1628 | |
|
|
1629 | if (!stash) |
|
|
1630 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
1631 | |
|
|
1632 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
1633 | |
|
|
1634 | if (!method) |
|
|
1635 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
1636 | |
|
|
1637 | dSP; |
|
|
1638 | |
|
|
1639 | ENTER; SAVETMPS; |
|
|
1640 | PUSHMARK (SP); |
|
|
1641 | EXTEND (SP, len + 2); |
|
|
1642 | // we re-bless the reference to get overload and other niceties right |
|
|
1643 | PUSHs (tag); |
|
|
1644 | PUSHs (sv_json); |
|
|
1645 | |
|
|
1646 | for (i = 0; i < len; ++i) |
|
|
1647 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1648 | |
|
|
1649 | PUTBACK; |
|
|
1650 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
|
1651 | SPAGAIN; |
|
|
1652 | |
|
|
1653 | SvREFCNT_dec (tag); |
|
|
1654 | SvREFCNT_dec (val); |
|
|
1655 | sv = SvREFCNT_inc (POPs); |
|
|
1656 | |
|
|
1657 | PUTBACK; |
|
|
1658 | |
|
|
1659 | FREETMPS; LEAVE; |
|
|
1660 | |
|
|
1661 | return sv; |
|
|
1662 | } |
|
|
1663 | |
|
|
1664 | fail: |
|
|
1665 | SvREFCNT_dec (tag); |
|
|
1666 | SvREFCNT_dec (val); |
805 | return 0; |
1667 | return 0; |
806 | } |
1668 | } |
807 | |
1669 | |
808 | static SV * |
1670 | static SV * |
809 | decode_sv (dec_t *dec) |
1671 | decode_sv (dec_t *dec) |
810 | { |
1672 | { |
811 | WS; |
1673 | // the beauty of JSON: you need exactly one character lookahead |
|
|
1674 | // to parse everything. |
812 | switch (*dec->cur) |
1675 | switch (*dec->cur) |
813 | { |
1676 | { |
814 | case '"': ++dec->cur; return decode_str (dec); |
1677 | case '"': ++dec->cur; return decode_str (dec); |
815 | case '[': ++dec->cur; return decode_av (dec); |
1678 | case '[': ++dec->cur; return decode_av (dec); |
816 | case '{': ++dec->cur; return decode_hv (dec); |
1679 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
1680 | case '(': return decode_tag (dec); |
817 | |
1681 | |
818 | case '-': |
1682 | case '-': |
819 | case '0': case '1': case '2': case '3': case '4': |
1683 | case '0': case '1': case '2': case '3': case '4': |
820 | case '5': case '6': case '7': case '8': case '9': |
1684 | case '5': case '6': case '7': case '8': case '9': |
821 | return decode_num (dec); |
1685 | return decode_num (dec); |
822 | |
1686 | |
|
|
1687 | case 'f': |
|
|
1688 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
|
|
1689 | { |
|
|
1690 | dec->cur += 5; |
|
|
1691 | |
|
|
1692 | if (expect_false (!dec->json.v_false)) |
|
|
1693 | dec->json.v_false = GET_BOOL (false); |
|
|
1694 | |
|
|
1695 | return newSVsv (dec->json.v_false); |
|
|
1696 | } |
|
|
1697 | else |
|
|
1698 | ERR ("'false' expected"); |
|
|
1699 | |
|
|
1700 | break; |
|
|
1701 | |
823 | case 't': |
1702 | case 't': |
824 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1703 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
825 | { |
1704 | { |
826 | dec->cur += 4; |
1705 | dec->cur += 4; |
|
|
1706 | |
|
|
1707 | if (expect_false (!dec->json.v_true)) |
|
|
1708 | dec->json.v_true = GET_BOOL (true); |
|
|
1709 | |
827 | return newSViv (1); |
1710 | return newSVsv (dec->json.v_true); |
828 | } |
1711 | } |
829 | else |
1712 | else |
830 | ERR ("'true' expected"); |
1713 | ERR ("'true' expected"); |
831 | |
|
|
832 | break; |
|
|
833 | |
|
|
834 | case 'f': |
|
|
835 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
|
|
836 | { |
|
|
837 | dec->cur += 5; |
|
|
838 | return newSViv (0); |
|
|
839 | } |
|
|
840 | else |
|
|
841 | ERR ("'false' expected"); |
|
|
842 | |
1714 | |
843 | break; |
1715 | break; |
844 | |
1716 | |
845 | case 'n': |
1717 | case 'n': |
846 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
1718 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
… | |
… | |
852 | ERR ("'null' expected"); |
1724 | ERR ("'null' expected"); |
853 | |
1725 | |
854 | break; |
1726 | break; |
855 | |
1727 | |
856 | default: |
1728 | default: |
857 | ERR ("malformed json string, neither array, object, number, string or atom"); |
1729 | ERR ("malformed JSON string, neither tag, array, object, number, string or atom"); |
858 | break; |
1730 | break; |
859 | } |
1731 | } |
860 | |
1732 | |
861 | fail: |
1733 | fail: |
862 | return 0; |
1734 | return 0; |
863 | } |
1735 | } |
864 | |
1736 | |
865 | static SV * |
1737 | static SV * |
866 | decode_json (SV *string, UV flags) |
1738 | decode_json (SV *string, JSON *json, STRLEN *offset_return) |
867 | { |
1739 | { |
|
|
1740 | dec_t dec; |
868 | SV *sv; |
1741 | SV *sv; |
869 | |
1742 | |
870 | if (flags & F_UTF8) |
1743 | /* work around bugs in 5.10 where manipulating magic values |
|
|
1744 | * makes perl ignore the magic in subsequent accesses. |
|
|
1745 | * also make a copy of non-PV values, to get them into a clean |
|
|
1746 | * state (SvPV should do that, but it's buggy, see below). |
|
|
1747 | * |
|
|
1748 | * SvIsCOW_shared_hash works around a bug in perl (possibly 5.16), |
|
|
1749 | * as reported by Reini Urban. |
|
|
1750 | */ |
|
|
1751 | /*SvGETMAGIC (string);*/ |
|
|
1752 | if (SvMAGICAL (string) || !SvPOK (string) || SvIsCOW_shared_hash (string)) |
|
|
1753 | string = sv_2mortal (newSVsv (string)); |
|
|
1754 | |
|
|
1755 | SvUPGRADE (string, SVt_PV); |
|
|
1756 | |
|
|
1757 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
1758 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
1759 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
1760 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
1761 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
1762 | * and hope for the best. |
|
|
1763 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
1764 | * assertion business is seriously broken, try yet another workaround |
|
|
1765 | * for the broken -DDEBUGGING. |
|
|
1766 | */ |
|
|
1767 | { |
|
|
1768 | #ifdef DEBUGGING |
|
|
1769 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
1770 | #else |
|
|
1771 | STRLEN offset = SvCUR (string); |
|
|
1772 | #endif |
|
|
1773 | |
|
|
1774 | if (offset > json->max_size && json->max_size) |
|
|
1775 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
1776 | (unsigned long)SvCUR (string), (unsigned long)json->max_size); |
|
|
1777 | } |
|
|
1778 | |
|
|
1779 | if (DECODE_WANTS_OCTETS (json)) |
871 | sv_utf8_downgrade (string, 0); |
1780 | sv_utf8_downgrade (string, 0); |
872 | else |
1781 | else |
873 | sv_utf8_upgrade (string); |
1782 | sv_utf8_upgrade (string); |
874 | |
1783 | |
875 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1784 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
876 | |
1785 | |
877 | dec_t dec; |
1786 | dec.json = *json; |
878 | dec.flags = flags; |
|
|
879 | dec.cur = SvPVX (string); |
1787 | dec.cur = SvPVX (string); |
880 | dec.end = SvEND (string); |
1788 | dec.end = SvEND (string); |
881 | dec.err = 0; |
1789 | dec.err = 0; |
|
|
1790 | dec.depth = 0; |
882 | |
1791 | |
|
|
1792 | if (dec.json.cb_object || dec.json.cb_sk_object) |
|
|
1793 | dec.json.flags |= F_HOOK; |
|
|
1794 | |
|
|
1795 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1796 | |
|
|
1797 | decode_ws (&dec); |
883 | sv = decode_sv (&dec); |
1798 | sv = decode_sv (&dec); |
884 | |
1799 | |
|
|
1800 | if (offset_return) |
|
|
1801 | *offset_return = dec.cur - SvPVX (string); |
|
|
1802 | else if (sv) |
|
|
1803 | { |
|
|
1804 | // check for trailing garbage |
|
|
1805 | decode_ws (&dec); |
|
|
1806 | |
|
|
1807 | if (dec.cur != dec.end) |
|
|
1808 | { |
|
|
1809 | dec.err = "garbage after JSON object"; |
|
|
1810 | SvREFCNT_dec (sv); |
|
|
1811 | sv = 0; |
|
|
1812 | } |
|
|
1813 | } |
|
|
1814 | |
885 | if (!sv) |
1815 | if (!sv) |
886 | { |
1816 | { |
887 | IV offset = dec.flags & F_UTF8 |
|
|
888 | ? dec.cur - SvPVX (string) |
|
|
889 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
890 | SV *uni = sv_newmortal (); |
1817 | SV *uni = sv_newmortal (); |
891 | |
1818 | |
892 | // horrible hack to silence warning inside pv_uni_display |
1819 | // horrible hack to silence warning inside pv_uni_display |
893 | COP cop = *PL_curcop; |
1820 | COP cop = *PL_curcop; |
894 | cop.cop_warnings = pWARN_NONE; |
1821 | cop.cop_warnings = pWARN_NONE; |
… | |
… | |
896 | SAVEVPTR (PL_curcop); |
1823 | SAVEVPTR (PL_curcop); |
897 | PL_curcop = &cop; |
1824 | PL_curcop = &cop; |
898 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1825 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
899 | LEAVE; |
1826 | LEAVE; |
900 | |
1827 | |
901 | croak ("%s, at character offset %d (%s)", |
1828 | croak ("%s, at character offset %d (before \"%s\")", |
902 | dec.err, |
1829 | dec.err, |
903 | (int)offset, |
1830 | (int)ptr_to_index (string, dec.cur), |
904 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1831 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
905 | } |
1832 | } |
906 | |
1833 | |
907 | sv = sv_2mortal (sv); |
1834 | sv = sv_2mortal (sv); |
908 | |
1835 | |
909 | if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1836 | if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv)) |
910 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
1837 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
911 | |
1838 | |
912 | return sv; |
1839 | return sv; |
913 | } |
1840 | } |
914 | |
1841 | |
|
|
1842 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1843 | // incremental parser |
|
|
1844 | |
|
|
1845 | static void |
|
|
1846 | incr_parse (JSON *self) |
|
|
1847 | { |
|
|
1848 | const char *p = SvPVX (self->incr_text) + self->incr_pos; |
|
|
1849 | |
|
|
1850 | // the state machine here is a bit convoluted and could be simplified a lot |
|
|
1851 | // but this would make it slower, so... |
|
|
1852 | |
|
|
1853 | for (;;) |
|
|
1854 | { |
|
|
1855 | switch (self->incr_mode) |
|
|
1856 | { |
|
|
1857 | // reached end of a scalar, see if we are inside a nested structure or not |
|
|
1858 | end_of_scalar: |
|
|
1859 | self->incr_mode = INCR_M_JSON; |
|
|
1860 | |
|
|
1861 | if (self->incr_nest) // end of a scalar inside array, object or tag |
|
|
1862 | goto incr_m_json; |
|
|
1863 | else // end of scalar outside structure, json text ends here |
|
|
1864 | goto interrupt; |
|
|
1865 | |
|
|
1866 | // only used for initial whitespace skipping |
|
|
1867 | case INCR_M_WS: |
|
|
1868 | for (;;) |
|
|
1869 | { |
|
|
1870 | if (*p > 0x20) |
|
|
1871 | { |
|
|
1872 | if (*p == '#') |
|
|
1873 | { |
|
|
1874 | self->incr_mode = INCR_M_C0; |
|
|
1875 | goto incr_m_c; |
|
|
1876 | } |
|
|
1877 | else |
|
|
1878 | { |
|
|
1879 | self->incr_mode = INCR_M_JSON; |
|
|
1880 | goto incr_m_json; |
|
|
1881 | } |
|
|
1882 | } |
|
|
1883 | else if (!*p) |
|
|
1884 | goto interrupt; |
|
|
1885 | |
|
|
1886 | ++p; |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | // skip a single char inside a string (for \\-processing) |
|
|
1890 | case INCR_M_BS: |
|
|
1891 | if (!*p) |
|
|
1892 | goto interrupt; |
|
|
1893 | |
|
|
1894 | ++p; |
|
|
1895 | self->incr_mode = INCR_M_STR; |
|
|
1896 | goto incr_m_str; |
|
|
1897 | |
|
|
1898 | // inside #-style comments |
|
|
1899 | case INCR_M_C0: |
|
|
1900 | case INCR_M_C1: |
|
|
1901 | incr_m_c: |
|
|
1902 | for (;;) |
|
|
1903 | { |
|
|
1904 | if (*p == '\n') |
|
|
1905 | { |
|
|
1906 | self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON; |
|
|
1907 | break; |
|
|
1908 | } |
|
|
1909 | else if (!*p) |
|
|
1910 | goto interrupt; |
|
|
1911 | |
|
|
1912 | ++p; |
|
|
1913 | } |
|
|
1914 | |
|
|
1915 | break; |
|
|
1916 | |
|
|
1917 | // inside true/false/null |
|
|
1918 | case INCR_M_TFN: |
|
|
1919 | incr_m_tfn: |
|
|
1920 | for (;;) |
|
|
1921 | switch (*p++) |
|
|
1922 | { |
|
|
1923 | case 'r': case 'u': case 'e': // tRUE, falsE, nUll |
|
|
1924 | case 'a': case 'l': case 's': // fALSe, nuLL |
|
|
1925 | // allowed |
|
|
1926 | break; |
|
|
1927 | |
|
|
1928 | default: |
|
|
1929 | --p; |
|
|
1930 | goto end_of_scalar; |
|
|
1931 | } |
|
|
1932 | |
|
|
1933 | // inside a number |
|
|
1934 | case INCR_M_NUM: |
|
|
1935 | incr_m_num: |
|
|
1936 | for (;;) |
|
|
1937 | switch (*p++) |
|
|
1938 | { |
|
|
1939 | case 'e': case 'E': case '.': case '+': |
|
|
1940 | case '-': |
|
|
1941 | case '0': case '1': case '2': case '3': case '4': |
|
|
1942 | case '5': case '6': case '7': case '8': case '9': |
|
|
1943 | // allowed |
|
|
1944 | break; |
|
|
1945 | |
|
|
1946 | default: |
|
|
1947 | --p; |
|
|
1948 | goto end_of_scalar; |
|
|
1949 | } |
|
|
1950 | |
|
|
1951 | // inside a string |
|
|
1952 | case INCR_M_STR: |
|
|
1953 | incr_m_str: |
|
|
1954 | for (;;) |
|
|
1955 | { |
|
|
1956 | if (*p == '"') |
|
|
1957 | { |
|
|
1958 | ++p; |
|
|
1959 | goto end_of_scalar; |
|
|
1960 | } |
|
|
1961 | else if (*p == '\\') |
|
|
1962 | { |
|
|
1963 | ++p; // "virtually" consumes character after \ |
|
|
1964 | |
|
|
1965 | if (!*p) // if at end of string we have to switch modes |
|
|
1966 | { |
|
|
1967 | self->incr_mode = INCR_M_BS; |
|
|
1968 | goto interrupt; |
|
|
1969 | } |
|
|
1970 | } |
|
|
1971 | else if (!*p) |
|
|
1972 | goto interrupt; |
|
|
1973 | |
|
|
1974 | ++p; |
|
|
1975 | } |
|
|
1976 | |
|
|
1977 | // after initial ws, outside string |
|
|
1978 | case INCR_M_JSON: |
|
|
1979 | incr_m_json: |
|
|
1980 | for (;;) |
|
|
1981 | { |
|
|
1982 | switch (*p++) |
|
|
1983 | { |
|
|
1984 | case 0: |
|
|
1985 | --p; |
|
|
1986 | goto interrupt; |
|
|
1987 | |
|
|
1988 | case 0x09: |
|
|
1989 | case 0x0a: |
|
|
1990 | case 0x0d: |
|
|
1991 | case 0x20: |
|
|
1992 | if (!self->incr_nest) |
|
|
1993 | { |
|
|
1994 | --p; // do not eat the whitespace, let the next round do it |
|
|
1995 | goto interrupt; |
|
|
1996 | } |
|
|
1997 | break; |
|
|
1998 | |
|
|
1999 | // the following three blocks handle scalars. this makes the parser |
|
|
2000 | // more strict than required inside arrays or objects, and could |
|
|
2001 | // be moved to a special case on the toplevel (except strings) |
|
|
2002 | case 't': |
|
|
2003 | case 'f': |
|
|
2004 | case 'n': |
|
|
2005 | self->incr_mode = INCR_M_TFN; |
|
|
2006 | goto incr_m_tfn; |
|
|
2007 | |
|
|
2008 | case '-': |
|
|
2009 | case '0': case '1': case '2': case '3': case '4': |
|
|
2010 | case '5': case '6': case '7': case '8': case '9': |
|
|
2011 | self->incr_mode = INCR_M_NUM; |
|
|
2012 | goto incr_m_num; |
|
|
2013 | |
|
|
2014 | case '"': |
|
|
2015 | self->incr_mode = INCR_M_STR; |
|
|
2016 | goto incr_m_str; |
|
|
2017 | |
|
|
2018 | case '[': |
|
|
2019 | case '{': |
|
|
2020 | case '(': |
|
|
2021 | if (++self->incr_nest > self->max_depth) |
|
|
2022 | croak (ERR_NESTING_EXCEEDED); |
|
|
2023 | break; |
|
|
2024 | |
|
|
2025 | case ']': |
|
|
2026 | case '}': |
|
|
2027 | if (--self->incr_nest <= 0) |
|
|
2028 | goto interrupt; |
|
|
2029 | break; |
|
|
2030 | |
|
|
2031 | case ')': |
|
|
2032 | --self->incr_nest; |
|
|
2033 | break; |
|
|
2034 | |
|
|
2035 | case '#': |
|
|
2036 | self->incr_mode = INCR_M_C1; |
|
|
2037 | goto incr_m_c; |
|
|
2038 | } |
|
|
2039 | } |
|
|
2040 | } |
|
|
2041 | |
|
|
2042 | modechange: |
|
|
2043 | ; |
|
|
2044 | } |
|
|
2045 | |
|
|
2046 | interrupt: |
|
|
2047 | self->incr_pos = p - SvPVX (self->incr_text); |
|
|
2048 | //printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D |
|
|
2049 | //printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D |
|
|
2050 | } |
|
|
2051 | |
|
|
2052 | ///////////////////////////////////////////////////////////////////////////// |
|
|
2053 | // XS interface functions |
|
|
2054 | |
915 | MODULE = JSON::XS PACKAGE = JSON::XS |
2055 | MODULE = JSON::XS PACKAGE = JSON::XS |
916 | |
2056 | |
917 | BOOT: |
2057 | BOOT: |
918 | { |
2058 | { |
919 | int i; |
2059 | int i; |
920 | |
2060 | |
921 | memset (decode_hexdigit, 0xff, 256); |
|
|
922 | for (i = 10; i--; ) |
2061 | for (i = 0; i < 256; ++i) |
923 | decode_hexdigit ['0' + i] = i; |
2062 | decode_hexdigit [i] = |
|
|
2063 | i >= '0' && i <= '9' ? i - '0' |
|
|
2064 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
|
|
2065 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
|
|
2066 | : -1; |
924 | |
2067 | |
925 | for (i = 7; i--; ) |
2068 | json_stash = gv_stashpv ("JSON::XS" , 1); |
926 | { |
2069 | bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
927 | decode_hexdigit ['a' + i] = 10 + i; |
2070 | bool_false = get_bool ("Types::Serialiser::false"); |
928 | decode_hexdigit ['A' + i] = 10 + i; |
2071 | bool_true = get_bool ("Types::Serialiser::true"); |
|
|
2072 | |
|
|
2073 | sv_json = newSVpv ("JSON", 0); |
|
|
2074 | SvREADONLY_on (sv_json); |
|
|
2075 | |
|
|
2076 | CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ |
|
|
2077 | } |
|
|
2078 | |
|
|
2079 | PROTOTYPES: DISABLE |
|
|
2080 | |
|
|
2081 | void CLONE (...) |
|
|
2082 | CODE: |
|
|
2083 | // as long as these writes are atomic, the race should not matter |
|
|
2084 | // as existing threads either already use 0, or use the old value, |
|
|
2085 | // which is sitll correct for the initial thread. |
|
|
2086 | json_stash = 0; |
|
|
2087 | bool_stash = 0; |
|
|
2088 | bool_false = 0; |
|
|
2089 | bool_true = 0; |
|
|
2090 | |
|
|
2091 | void new (char *klass) |
|
|
2092 | PPCODE: |
|
|
2093 | { |
|
|
2094 | SV *pv = NEWSV (0, sizeof (JSON)); |
|
|
2095 | SvPOK_only (pv); |
|
|
2096 | json_init ((JSON *)SvPVX (pv)); |
|
|
2097 | XPUSHs (sv_2mortal (sv_bless ( |
|
|
2098 | newRV_noinc (pv), |
|
|
2099 | strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) |
|
|
2100 | ))); |
|
|
2101 | } |
|
|
2102 | |
|
|
2103 | void boolean_values (JSON *self, SV *v_false = 0, SV *v_true = 0) |
|
|
2104 | PPCODE: |
|
|
2105 | self->v_false = newSVsv (v_false); |
|
|
2106 | self->v_true = newSVsv (v_true); |
|
|
2107 | XPUSHs (ST (0)); |
|
|
2108 | |
|
|
2109 | void get_boolean_values (JSON *self) |
|
|
2110 | PPCODE: |
|
|
2111 | if (self->v_false && self->v_true) |
|
|
2112 | { |
|
|
2113 | EXTEND (SP, 2); |
|
|
2114 | PUSHs (self->v_false); |
|
|
2115 | PUSHs (self->v_true); |
929 | } |
2116 | } |
930 | |
2117 | |
931 | json_stash = gv_stashpv ("JSON::XS", 1); |
2118 | void ascii (JSON *self, int enable = 1) |
932 | } |
2119 | ALIAS: |
|
|
2120 | ascii = F_ASCII |
|
|
2121 | latin1 = F_LATIN1 |
|
|
2122 | utf8 = F_UTF8 |
|
|
2123 | indent = F_INDENT |
|
|
2124 | canonical = F_CANONICAL |
|
|
2125 | space_before = F_SPACE_BEFORE |
|
|
2126 | space_after = F_SPACE_AFTER |
|
|
2127 | pretty = F_PRETTY |
|
|
2128 | allow_nonref = F_ALLOW_NONREF |
|
|
2129 | shrink = F_SHRINK |
|
|
2130 | allow_blessed = F_ALLOW_BLESSED |
|
|
2131 | convert_blessed = F_CONV_BLESSED |
|
|
2132 | relaxed = F_RELAXED |
|
|
2133 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
2134 | allow_tags = F_ALLOW_TAGS |
|
|
2135 | PPCODE: |
|
|
2136 | { |
|
|
2137 | if (enable) |
|
|
2138 | self->flags |= ix; |
|
|
2139 | else |
|
|
2140 | self->flags &= ~ix; |
933 | |
2141 | |
934 | PROTOTYPES: DISABLE |
2142 | XPUSHs (ST (0)); |
|
|
2143 | } |
935 | |
2144 | |
936 | SV *new (char *dummy) |
2145 | void get_ascii (JSON *self) |
|
|
2146 | ALIAS: |
|
|
2147 | get_ascii = F_ASCII |
|
|
2148 | get_latin1 = F_LATIN1 |
|
|
2149 | get_utf8 = F_UTF8 |
|
|
2150 | get_indent = F_INDENT |
|
|
2151 | get_canonical = F_CANONICAL |
|
|
2152 | get_space_before = F_SPACE_BEFORE |
|
|
2153 | get_space_after = F_SPACE_AFTER |
|
|
2154 | get_allow_nonref = F_ALLOW_NONREF |
|
|
2155 | get_shrink = F_SHRINK |
|
|
2156 | get_allow_blessed = F_ALLOW_BLESSED |
|
|
2157 | get_convert_blessed = F_CONV_BLESSED |
|
|
2158 | get_relaxed = F_RELAXED |
|
|
2159 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
2160 | get_allow_tags = F_ALLOW_TAGS |
|
|
2161 | PPCODE: |
|
|
2162 | XPUSHs (boolSV (self->flags & ix)); |
|
|
2163 | |
|
|
2164 | void max_depth (JSON *self, U32 max_depth = 0x80000000UL) |
|
|
2165 | PPCODE: |
|
|
2166 | self->max_depth = max_depth; |
|
|
2167 | XPUSHs (ST (0)); |
|
|
2168 | |
|
|
2169 | U32 get_max_depth (JSON *self) |
937 | CODE: |
2170 | CODE: |
938 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
2171 | RETVAL = self->max_depth; |
939 | OUTPUT: |
2172 | OUTPUT: |
940 | RETVAL |
2173 | RETVAL |
941 | |
2174 | |
942 | SV *ascii (SV *self, int enable = 1) |
2175 | void max_size (JSON *self, U32 max_size = 0) |
943 | ALIAS: |
2176 | PPCODE: |
944 | ascii = F_ASCII |
2177 | self->max_size = max_size; |
945 | utf8 = F_UTF8 |
2178 | XPUSHs (ST (0)); |
946 | indent = F_INDENT |
2179 | |
947 | canonical = F_CANONICAL |
2180 | int get_max_size (JSON *self) |
948 | space_before = F_SPACE_BEFORE |
|
|
949 | space_after = F_SPACE_AFTER |
|
|
950 | pretty = F_PRETTY |
|
|
951 | allow_nonref = F_ALLOW_NONREF |
|
|
952 | shrink = F_SHRINK |
|
|
953 | CODE: |
2181 | CODE: |
954 | { |
2182 | RETVAL = self->max_size; |
955 | UV *uv = SvJSON (self); |
|
|
956 | if (enable) |
|
|
957 | *uv |= ix; |
|
|
958 | else |
|
|
959 | *uv &= ~ix; |
|
|
960 | |
|
|
961 | RETVAL = newSVsv (self); |
|
|
962 | } |
|
|
963 | OUTPUT: |
2183 | OUTPUT: |
964 | RETVAL |
2184 | RETVAL |
965 | |
2185 | |
966 | void encode (SV *self, SV *scalar) |
2186 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
967 | PPCODE: |
2187 | PPCODE: |
968 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
2188 | { |
|
|
2189 | SvREFCNT_dec (self->cb_object); |
|
|
2190 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
969 | |
2191 | |
970 | void decode (SV *self, SV *jsonstr) |
2192 | XPUSHs (ST (0)); |
|
|
2193 | } |
|
|
2194 | |
|
|
2195 | void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) |
971 | PPCODE: |
2196 | PPCODE: |
972 | XPUSHs (decode_json (jsonstr, *SvJSON (self))); |
2197 | { |
|
|
2198 | if (!self->cb_sk_object) |
|
|
2199 | self->cb_sk_object = newHV (); |
|
|
2200 | |
|
|
2201 | if (SvOK (cb)) |
|
|
2202 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
2203 | else |
|
|
2204 | { |
|
|
2205 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
2206 | |
|
|
2207 | if (!HvKEYS (self->cb_sk_object)) |
|
|
2208 | { |
|
|
2209 | SvREFCNT_dec (self->cb_sk_object); |
|
|
2210 | self->cb_sk_object = 0; |
|
|
2211 | } |
|
|
2212 | } |
|
|
2213 | |
|
|
2214 | XPUSHs (ST (0)); |
|
|
2215 | } |
|
|
2216 | |
|
|
2217 | void encode (JSON *self, SV *scalar) |
|
|
2218 | PPCODE: |
|
|
2219 | PUTBACK; scalar = encode_json (scalar, self); SPAGAIN; |
|
|
2220 | XPUSHs (scalar); |
|
|
2221 | |
|
|
2222 | void decode (JSON *self, SV *jsonstr) |
|
|
2223 | PPCODE: |
|
|
2224 | PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN; |
|
|
2225 | XPUSHs (jsonstr); |
|
|
2226 | |
|
|
2227 | void decode_prefix (JSON *self, SV *jsonstr) |
|
|
2228 | PPCODE: |
|
|
2229 | { |
|
|
2230 | SV *sv; |
|
|
2231 | STRLEN offset; |
|
|
2232 | PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN; |
|
|
2233 | EXTEND (SP, 2); |
|
|
2234 | PUSHs (sv); |
|
|
2235 | PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset)))); |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | void incr_parse (JSON *self, SV *jsonstr = 0) |
|
|
2239 | PPCODE: |
|
|
2240 | { |
|
|
2241 | if (!self->incr_text) |
|
|
2242 | self->incr_text = newSVpvn ("", 0); |
|
|
2243 | |
|
|
2244 | /* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */ |
|
|
2245 | if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text)) |
|
|
2246 | if (DECODE_WANTS_OCTETS (self)) |
|
|
2247 | { |
|
|
2248 | if (self->incr_pos) |
|
|
2249 | self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text), |
|
|
2250 | (U8 *)SvPVX (self->incr_text) + self->incr_pos); |
|
|
2251 | |
|
|
2252 | sv_utf8_downgrade (self->incr_text, 0); |
|
|
2253 | } |
|
|
2254 | else |
|
|
2255 | { |
|
|
2256 | sv_utf8_upgrade (self->incr_text); |
|
|
2257 | |
|
|
2258 | if (self->incr_pos) |
|
|
2259 | self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos) |
|
|
2260 | - (U8 *)SvPVX (self->incr_text); |
|
|
2261 | } |
|
|
2262 | |
|
|
2263 | // append data, if any |
|
|
2264 | if (jsonstr) |
|
|
2265 | { |
|
|
2266 | /* make sure both strings have same encoding */ |
|
|
2267 | if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text)) |
|
|
2268 | if (SvUTF8 (jsonstr)) |
|
|
2269 | sv_utf8_downgrade (jsonstr, 0); |
|
|
2270 | else |
|
|
2271 | sv_utf8_upgrade (jsonstr); |
|
|
2272 | |
|
|
2273 | /* and then just blindly append */ |
|
|
2274 | { |
|
|
2275 | STRLEN len; |
|
|
2276 | const char *str = SvPV (jsonstr, len); |
|
|
2277 | STRLEN cur = SvCUR (self->incr_text); |
|
|
2278 | |
|
|
2279 | if (SvLEN (self->incr_text) - cur <= len) |
|
|
2280 | json_sv_grow (self->incr_text, cur, len); |
|
|
2281 | |
|
|
2282 | Move (str, SvEND (self->incr_text), len, char); |
|
|
2283 | SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); |
|
|
2284 | *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there |
|
|
2285 | } |
|
|
2286 | } |
|
|
2287 | |
|
|
2288 | if (GIMME_V != G_VOID) |
|
|
2289 | do |
|
|
2290 | { |
|
|
2291 | SV *sv; |
|
|
2292 | STRLEN offset; |
|
|
2293 | |
|
|
2294 | if (!INCR_DONE (self)) |
|
|
2295 | { |
|
|
2296 | incr_parse (self); |
|
|
2297 | |
|
|
2298 | if (self->incr_pos > self->max_size && self->max_size) |
|
|
2299 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
2300 | (unsigned long)self->incr_pos, (unsigned long)self->max_size); |
|
|
2301 | |
|
|
2302 | if (!INCR_DONE (self)) |
|
|
2303 | { |
|
|
2304 | // as an optimisation, do not accumulate white space in the incr buffer |
|
|
2305 | if (self->incr_mode == INCR_M_WS && self->incr_pos) |
|
|
2306 | { |
|
|
2307 | self->incr_pos = 0; |
|
|
2308 | SvCUR_set (self->incr_text, 0); |
|
|
2309 | } |
|
|
2310 | |
|
|
2311 | break; |
|
|
2312 | } |
|
|
2313 | } |
|
|
2314 | |
|
|
2315 | PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN; |
|
|
2316 | XPUSHs (sv); |
|
|
2317 | |
|
|
2318 | self->incr_pos -= offset; |
|
|
2319 | self->incr_nest = 0; |
|
|
2320 | self->incr_mode = 0; |
|
|
2321 | |
|
|
2322 | sv_chop (self->incr_text, SvPVX (self->incr_text) + offset); |
|
|
2323 | } |
|
|
2324 | while (GIMME_V == G_ARRAY); |
|
|
2325 | } |
|
|
2326 | |
|
|
2327 | SV *incr_text (JSON *self) |
|
|
2328 | ATTRS: lvalue |
|
|
2329 | CODE: |
|
|
2330 | { |
|
|
2331 | if (self->incr_pos) |
|
|
2332 | croak ("incr_text can not be called when the incremental parser already started parsing"); |
|
|
2333 | |
|
|
2334 | RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef; |
|
|
2335 | } |
|
|
2336 | OUTPUT: |
|
|
2337 | RETVAL |
|
|
2338 | |
|
|
2339 | void incr_skip (JSON *self) |
|
|
2340 | CODE: |
|
|
2341 | { |
|
|
2342 | if (self->incr_pos) |
|
|
2343 | { |
|
|
2344 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos); |
|
|
2345 | self->incr_pos = 0; |
|
|
2346 | self->incr_nest = 0; |
|
|
2347 | self->incr_mode = 0; |
|
|
2348 | } |
|
|
2349 | } |
|
|
2350 | |
|
|
2351 | void incr_reset (JSON *self) |
|
|
2352 | CODE: |
|
|
2353 | { |
|
|
2354 | SvREFCNT_dec (self->incr_text); |
|
|
2355 | self->incr_text = 0; |
|
|
2356 | self->incr_pos = 0; |
|
|
2357 | self->incr_nest = 0; |
|
|
2358 | self->incr_mode = 0; |
|
|
2359 | } |
|
|
2360 | |
|
|
2361 | void DESTROY (JSON *self) |
|
|
2362 | CODE: |
|
|
2363 | SvREFCNT_dec (self->v_false); |
|
|
2364 | SvREFCNT_dec (self->v_true); |
|
|
2365 | SvREFCNT_dec (self->cb_sk_object); |
|
|
2366 | SvREFCNT_dec (self->cb_object); |
|
|
2367 | SvREFCNT_dec (self->incr_text); |
973 | |
2368 | |
974 | PROTOTYPES: ENABLE |
2369 | PROTOTYPES: ENABLE |
975 | |
2370 | |
976 | void to_json (SV *scalar) |
2371 | void encode_json (SV *scalar) |
977 | PPCODE: |
2372 | PPCODE: |
978 | XPUSHs (encode_json (scalar, F_UTF8)); |
2373 | { |
|
|
2374 | JSON json; |
|
|
2375 | json_init (&json); |
|
|
2376 | json.flags |= F_UTF8; |
|
|
2377 | PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN; |
|
|
2378 | XPUSHs (scalar); |
|
|
2379 | } |
979 | |
2380 | |
980 | void from_json (SV *jsonstr) |
2381 | void decode_json (SV *jsonstr) |
981 | PPCODE: |
2382 | PPCODE: |
982 | XPUSHs (decode_json (jsonstr, F_UTF8)); |
2383 | { |
|
|
2384 | JSON json; |
|
|
2385 | json_init (&json); |
|
|
2386 | json.flags |= F_UTF8; |
|
|
2387 | PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN; |
|
|
2388 | XPUSHs (jsonstr); |
|
|
2389 | } |
983 | |
2390 | |