1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include "assert.h" |
5 | #include <assert.h> |
6 | #include "string.h" |
6 | #include <string.h> |
7 | #include "stdlib.h" |
7 | #include <stdlib.h> |
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8 | #include <stdio.h> |
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9 | #include <limits.h> |
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10 | #include <float.h> |
8 | |
11 | |
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12 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
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13 | # define snprintf _snprintf // C compilers have this in stdio.h |
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14 | #endif |
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15 | |
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16 | // some old perls do not have this, try to make it work, no |
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17 | // guarentees, though. if it breaks, you get to keep the pieces. |
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18 | #ifndef UTF8_MAXBYTES |
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19 | # define UTF8_MAXBYTES 13 |
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20 | #endif |
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21 | |
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22 | #define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2) |
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23 | |
9 | #define F_ASCII 0x00000001 |
24 | #define F_ASCII 0x00000001UL |
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25 | #define F_LATIN1 0x00000002UL |
10 | #define F_UTF8 0x00000002 |
26 | #define F_UTF8 0x00000004UL |
11 | #define F_INDENT 0x00000004 |
27 | #define F_INDENT 0x00000008UL |
12 | #define F_CANONICAL 0x00000008 |
28 | #define F_CANONICAL 0x00000010UL |
13 | #define F_SPACE_BEFORE 0x00000010 |
29 | #define F_SPACE_BEFORE 0x00000020UL |
14 | #define F_SPACE_AFTER 0x00000020 |
30 | #define F_SPACE_AFTER 0x00000040UL |
15 | #define F_JSON_RPC 0x00000040 |
31 | #define F_ALLOW_NONREF 0x00000100UL |
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32 | #define F_SHRINK 0x00000200UL |
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33 | #define F_ALLOW_BLESSED 0x00000400UL |
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34 | #define F_CONV_BLESSED 0x00000800UL |
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35 | #define F_RELAXED 0x00001000UL |
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36 | #define F_ALLOW_UNKNOWN 0x00002000UL |
16 | |
37 | |
17 | #define F_DEFAULT 0 |
38 | #define F_MAXDEPTH 0xf8000000UL |
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39 | #define S_MAXDEPTH 27 |
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40 | #define F_MAXSIZE 0x01f00000UL |
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41 | #define S_MAXSIZE 20 |
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42 | #define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing |
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43 | |
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44 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
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45 | #define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE )) |
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46 | |
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47 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
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48 | #define F_DEFAULT (9UL << S_MAXDEPTH) |
18 | |
49 | |
19 | #define INIT_SIZE 32 // initial scalar size to be allocated |
50 | #define INIT_SIZE 32 // initial scalar size to be allocated |
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51 | #define INDENT_STEP 3 // spaces per indentation level |
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52 | |
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53 | #define SHORT_STRING_LEN 16384 // special-case strings of up to this size |
20 | |
54 | |
21 | #define SB do { |
55 | #define SB do { |
22 | #define SE } while (0) |
56 | #define SE } while (0) |
23 | |
57 | |
24 | static HV *json_stash; |
58 | #if __GNUC__ >= 3 |
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59 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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60 | # define INLINE static inline |
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61 | #else |
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62 | # define expect(expr,value) (expr) |
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63 | # define INLINE static |
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64 | #endif |
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65 | |
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66 | #define expect_false(expr) expect ((expr) != 0, 0) |
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67 | #define expect_true(expr) expect ((expr) != 0, 1) |
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68 | |
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69 | #define IN_RANGE_INC(type,val,beg,end) \ |
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70 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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71 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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72 | |
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73 | #ifdef USE_ITHREADS |
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74 | # define JSON_SLOW 1 |
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75 | # define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) |
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76 | #else |
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77 | # define JSON_SLOW 0 |
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78 | # define JSON_STASH json_stash |
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79 | #endif |
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80 | |
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81 | static HV *json_stash, *json_boolean_stash; // JSON::XS:: |
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82 | static SV *json_true, *json_false; |
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83 | |
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84 | enum { |
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85 | INCR_M_WS = 0, // initial whitespace skipping, must be 0 |
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86 | INCR_M_STR, // inside string |
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87 | INCR_M_BS, // inside backslash |
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88 | INCR_M_JSON // outside anything, count nesting |
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89 | }; |
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90 | |
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91 | #define INCR_DONE(json) (!(json)->incr_nest && (json)->incr_mode == INCR_M_JSON) |
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92 | |
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93 | typedef struct { |
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94 | U32 flags; |
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95 | SV *cb_object; |
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96 | HV *cb_sk_object; |
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97 | |
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98 | // for the incremental parser |
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99 | SV *incr_text; // the source text so far |
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100 | STRLEN incr_pos; // the current offset into the text |
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101 | int incr_nest; // {[]}-nesting level |
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102 | int incr_mode; |
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103 | } JSON; |
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104 | |
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105 | ///////////////////////////////////////////////////////////////////////////// |
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106 | // utility functions |
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107 | |
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108 | INLINE SV * |
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109 | get_bool (const char *name) |
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110 | { |
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111 | SV *sv = get_sv (name, 1); |
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112 | |
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113 | SvREADONLY_on (sv); |
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114 | SvREADONLY_on (SvRV (sv)); |
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115 | |
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116 | return sv; |
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117 | } |
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118 | |
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119 | INLINE void |
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120 | shrink (SV *sv) |
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121 | { |
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122 | sv_utf8_downgrade (sv, 1); |
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123 | if (SvLEN (sv) > SvCUR (sv) + 1) |
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124 | { |
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125 | #ifdef SvPV_shrink_to_cur |
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126 | SvPV_shrink_to_cur (sv); |
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127 | #elif defined (SvPV_renew) |
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128 | SvPV_renew (sv, SvCUR (sv) + 1); |
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129 | #endif |
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130 | } |
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131 | } |
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132 | |
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133 | // decode an utf-8 character and return it, or (UV)-1 in |
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134 | // case of an error. |
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135 | // we special-case "safe" characters from U+80 .. U+7FF, |
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136 | // but use the very good perl function to parse anything else. |
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137 | // note that we never call this function for a ascii codepoints |
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138 | INLINE UV |
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139 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
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140 | { |
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141 | if (expect_true (len >= 2 |
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142 | && IN_RANGE_INC (char, s[0], 0xc2, 0xdf) |
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143 | && IN_RANGE_INC (char, s[1], 0x80, 0xbf))) |
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144 | { |
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145 | *clen = 2; |
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146 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
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147 | } |
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148 | else |
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149 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
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150 | } |
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151 | |
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152 | // likewise for encoding, also never called for ascii codepoints |
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153 | // this function takes advantage of this fact, although current gccs |
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154 | // seem to optimise the check for >= 0x80 away anyways |
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155 | INLINE unsigned char * |
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156 | encode_utf8 (unsigned char *s, UV ch) |
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157 | { |
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158 | if (expect_false (ch < 0x000080)) |
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159 | *s++ = ch; |
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160 | else if (expect_true (ch < 0x000800)) |
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161 | *s++ = 0xc0 | ( ch >> 6), |
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162 | *s++ = 0x80 | ( ch & 0x3f); |
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163 | else if ( ch < 0x010000) |
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164 | *s++ = 0xe0 | ( ch >> 12), |
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165 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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166 | *s++ = 0x80 | ( ch & 0x3f); |
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167 | else if ( ch < 0x110000) |
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168 | *s++ = 0xf0 | ( ch >> 18), |
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169 | *s++ = 0x80 | ((ch >> 12) & 0x3f), |
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170 | *s++ = 0x80 | ((ch >> 6) & 0x3f), |
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171 | *s++ = 0x80 | ( ch & 0x3f); |
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172 | |
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173 | return s; |
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174 | } |
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175 | |
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176 | ///////////////////////////////////////////////////////////////////////////// |
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177 | // encoder |
25 | |
178 | |
26 | // structure used for encoding JSON |
179 | // structure used for encoding JSON |
27 | typedef struct |
180 | typedef struct |
28 | { |
181 | { |
29 | char *cur; |
182 | char *cur; // SvPVX (sv) + current output position |
30 | STRLEN len; // SvLEN (sv) |
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31 | char *end; // SvEND (sv) |
183 | char *end; // SvEND (sv) |
32 | SV *sv; |
184 | SV *sv; // result scalar |
33 | UV flags; |
185 | JSON json; |
34 | int max_recurse; |
186 | U32 indent; // indentation level |
35 | int indent; |
187 | U32 maxdepth; // max. indentation/recursion level |
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188 | UV limit; // escape character values >= this value when encoding |
36 | } enc_t; |
189 | } enc_t; |
37 | |
190 | |
38 | // structure used for decoding JSON |
191 | INLINE void |
39 | typedef struct |
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40 | { |
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41 | char *cur; |
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42 | char *end; |
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43 | char *err; |
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44 | UV flags; |
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45 | } dec_t; |
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46 | |
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47 | static UV * |
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48 | SvJSON (SV *sv) |
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49 | { |
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50 | if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
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51 | croak ("object is not of type JSON::XS"); |
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52 | |
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53 | return &SvUVX (SvRV (sv)); |
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54 | } |
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55 | |
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56 | ///////////////////////////////////////////////////////////////////////////// |
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57 | |
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58 | static void |
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59 | need (enc_t *enc, STRLEN len) |
192 | need (enc_t *enc, STRLEN len) |
60 | { |
193 | { |
61 | if (enc->cur + len >= enc->end) |
194 | if (expect_false (enc->cur + len >= enc->end)) |
62 | { |
195 | { |
63 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
196 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
64 | SvGROW (enc->sv, cur + len + 1); |
197 | SvGROW (enc->sv, cur + len + 1); |
65 | enc->cur = SvPVX (enc->sv) + cur; |
198 | enc->cur = SvPVX (enc->sv) + cur; |
66 | enc->end = SvEND (enc->sv); |
199 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
67 | } |
200 | } |
68 | } |
201 | } |
69 | |
202 | |
70 | static void |
203 | INLINE void |
71 | encode_ch (enc_t *enc, char ch) |
204 | encode_ch (enc_t *enc, char ch) |
72 | { |
205 | { |
73 | need (enc, 1); |
206 | need (enc, 1); |
74 | *enc->cur++ = ch; |
207 | *enc->cur++ = ch; |
75 | } |
208 | } |
… | |
… | |
77 | static void |
210 | static void |
78 | encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
211 | encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
79 | { |
212 | { |
80 | char *end = str + len; |
213 | char *end = str + len; |
81 | |
214 | |
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215 | need (enc, len); |
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216 | |
82 | while (str < end) |
217 | while (str < end) |
83 | { |
218 | { |
84 | unsigned char ch = *(unsigned char *)str; |
219 | unsigned char ch = *(unsigned char *)str; |
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220 | |
85 | if (ch >= 0x20 && ch < 0x80) // most common case |
221 | if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case |
86 | { |
222 | { |
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223 | if (expect_false (ch == '"')) // but with slow exceptions |
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224 | { |
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225 | need (enc, len += 1); |
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226 | *enc->cur++ = '\\'; |
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227 | *enc->cur++ = '"'; |
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228 | } |
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229 | else if (expect_false (ch == '\\')) |
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230 | { |
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231 | need (enc, len += 1); |
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232 | *enc->cur++ = '\\'; |
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233 | *enc->cur++ = '\\'; |
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234 | } |
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235 | else |
87 | *enc->cur++ = ch; |
236 | *enc->cur++ = ch; |
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237 | |
88 | str++; |
238 | ++str; |
89 | } |
239 | } |
90 | else |
240 | else |
91 | { |
241 | { |
92 | STRLEN clen; |
242 | switch (ch) |
93 | UV uch; |
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94 | |
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95 | if (is_utf8) |
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96 | { |
243 | { |
97 | uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
244 | case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
98 | if (clen < 0) |
245 | case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
99 | croak ("malformed UTF-8 character in string, cannot convert to JSON"); |
246 | case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
100 | } |
247 | case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
101 | else |
248 | case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
102 | { |
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103 | uch = ch; |
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104 | clen = 1; |
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105 | } |
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106 | |
249 | |
107 | need (enc, len += 6); |
250 | default: |
108 | |
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109 | if (uch < 0xa0 || enc->flags & F_ASCII) |
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110 | { |
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111 | if (uch > 0xFFFFUL) |
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112 | { |
251 | { |
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252 | STRLEN clen; |
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253 | UV uch; |
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254 | |
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255 | if (is_utf8) |
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256 | { |
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257 | uch = decode_utf8 (str, end - str, &clen); |
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258 | if (clen == (STRLEN)-1) |
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259 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
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260 | } |
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261 | else |
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262 | { |
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263 | uch = ch; |
113 | len += 6; |
264 | clen = 1; |
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265 | } |
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266 | |
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267 | if (uch < 0x80/*0x20*/ || uch >= enc->limit) |
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268 | { |
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269 | if (uch >= 0x10000UL) |
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270 | { |
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271 | if (uch >= 0x110000UL) |
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272 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
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273 | |
114 | need (enc, len += 6); |
274 | need (enc, len += 11); |
115 | sprintf (enc->cur, "\\u%04x\\u%04x", |
275 | sprintf (enc->cur, "\\u%04x\\u%04x", |
116 | (uch - 0x10000) / 0x400 + 0xD800, |
276 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
117 | (uch - 0x10000) % 0x400 + 0xDC00); |
277 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
118 | enc->cur += 12; |
278 | enc->cur += 12; |
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279 | } |
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280 | else |
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281 | { |
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282 | static char hexdigit [16] = "0123456789abcdef"; |
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283 | need (enc, len += 5); |
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284 | *enc->cur++ = '\\'; |
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285 | *enc->cur++ = 'u'; |
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286 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
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287 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
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288 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
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289 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
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290 | } |
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291 | |
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292 | str += clen; |
119 | } |
293 | } |
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294 | else if (enc->json.flags & F_LATIN1) |
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295 | { |
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296 | *enc->cur++ = uch; |
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297 | str += clen; |
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298 | } |
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299 | else if (is_utf8) |
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300 | { |
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301 | need (enc, len += clen); |
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302 | do |
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303 | { |
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304 | *enc->cur++ = *str++; |
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305 | } |
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306 | while (--clen); |
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307 | } |
120 | else |
308 | else |
121 | { |
309 | { |
122 | sprintf (enc->cur, "\\u%04x", uch); |
310 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
123 | enc->cur += 6; |
311 | enc->cur = encode_utf8 (enc->cur, uch); |
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312 | ++str; |
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313 | } |
124 | } |
314 | } |
125 | } |
315 | } |
126 | else if (is_utf8) |
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127 | { |
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128 | memcpy (enc->cur, str, clen); |
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129 | enc->cur += clen; |
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130 | } |
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131 | else |
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132 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
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133 | |
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134 | str += clen; |
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135 | } |
316 | } |
136 | |
317 | |
137 | --len; |
318 | --len; |
138 | } |
319 | } |
139 | } |
320 | } |
140 | |
321 | |
141 | #define INDENT SB \ |
322 | INLINE void |
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323 | encode_indent (enc_t *enc) |
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324 | { |
142 | if (enc->flags & F_INDENT) \ |
325 | if (enc->json.flags & F_INDENT) |
143 | { \ |
326 | { |
144 | int i_; \ |
327 | int spaces = enc->indent * INDENT_STEP; |
145 | need (enc, enc->indent); \ |
328 | |
146 | for (i_ = enc->indent * 3; i_--; )\ |
329 | need (enc, spaces); |
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330 | memset (enc->cur, ' ', spaces); |
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331 | enc->cur += spaces; |
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332 | } |
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333 | } |
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334 | |
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335 | INLINE void |
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336 | encode_space (enc_t *enc) |
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337 | { |
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338 | need (enc, 1); |
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339 | encode_ch (enc, ' '); |
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340 | } |
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341 | |
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342 | INLINE void |
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343 | encode_nl (enc_t *enc) |
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344 | { |
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345 | if (enc->json.flags & F_INDENT) |
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346 | { |
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347 | need (enc, 1); |
147 | encode_ch (enc, ' '); \ |
348 | encode_ch (enc, '\n'); |
148 | } \ |
349 | } |
149 | SE |
350 | } |
150 | |
351 | |
151 | #define SPACE SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, ' '); } SE |
352 | INLINE void |
152 | #define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE |
353 | encode_comma (enc_t *enc) |
153 | #define COMMA SB \ |
354 | { |
154 | encode_ch (enc, ','); \ |
355 | encode_ch (enc, ','); |
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356 | |
155 | if (enc->flags & F_INDENT) \ |
357 | if (enc->json.flags & F_INDENT) |
156 | NL; \ |
358 | encode_nl (enc); |
157 | else if (enc->flags & F_SPACE_AFTER) \ |
359 | else if (enc->json.flags & F_SPACE_AFTER) |
158 | SPACE; \ |
360 | encode_space (enc); |
159 | SE |
361 | } |
160 | |
362 | |
161 | static void encode_sv (enc_t *enc, SV *sv); |
363 | static void encode_sv (enc_t *enc, SV *sv); |
162 | |
364 | |
163 | static void |
365 | static void |
164 | encode_av (enc_t *enc, AV *av) |
366 | encode_av (enc_t *enc, AV *av) |
165 | { |
367 | { |
166 | int i, len = av_len (av); |
368 | int i, len = av_len (av); |
167 | |
369 | |
|
|
370 | if (enc->indent >= enc->maxdepth) |
|
|
371 | croak ("data structure too deep (hit recursion limit)"); |
|
|
372 | |
168 | encode_ch (enc, '['); NL; |
373 | encode_ch (enc, '['); |
169 | ++enc->indent; |
374 | |
|
|
375 | if (len >= 0) |
|
|
376 | { |
|
|
377 | encode_nl (enc); ++enc->indent; |
170 | |
378 | |
171 | for (i = 0; i <= len; ++i) |
379 | for (i = 0; i <= len; ++i) |
172 | { |
380 | { |
173 | INDENT; |
381 | SV **svp = av_fetch (av, i, 0); |
174 | encode_sv (enc, *av_fetch (av, i, 0)); |
|
|
175 | |
382 | |
|
|
383 | encode_indent (enc); |
|
|
384 | |
|
|
385 | if (svp) |
|
|
386 | encode_sv (enc, *svp); |
|
|
387 | else |
|
|
388 | encode_str (enc, "null", 4, 0); |
|
|
389 | |
176 | if (i < len) |
390 | if (i < len) |
177 | COMMA; |
391 | encode_comma (enc); |
178 | } |
392 | } |
179 | |
393 | |
180 | NL; |
394 | encode_nl (enc); --enc->indent; encode_indent (enc); |
181 | |
395 | } |
182 | --enc->indent; |
396 | |
183 | INDENT; encode_ch (enc, ']'); |
397 | encode_ch (enc, ']'); |
184 | } |
398 | } |
185 | |
399 | |
186 | static void |
400 | static void |
187 | encode_he (enc_t *enc, HE *he) |
401 | encode_hk (enc_t *enc, HE *he) |
188 | { |
402 | { |
189 | encode_ch (enc, '"'); |
403 | encode_ch (enc, '"'); |
190 | |
404 | |
191 | if (HeKLEN (he) == HEf_SVKEY) |
405 | if (HeKLEN (he) == HEf_SVKEY) |
192 | { |
406 | { |
193 | SV *sv = HeSVKEY (he); |
407 | SV *sv = HeSVKEY (he); |
194 | STRLEN len; |
408 | STRLEN len; |
|
|
409 | char *str; |
|
|
410 | |
|
|
411 | SvGETMAGIC (sv); |
195 | char *str = SvPV (sv, len); |
412 | str = SvPV (sv, len); |
196 | |
413 | |
197 | encode_str (enc, str, len, SvUTF8 (sv)); |
414 | encode_str (enc, str, len, SvUTF8 (sv)); |
198 | } |
415 | } |
199 | else |
416 | else |
200 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
417 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
201 | |
418 | |
202 | encode_ch (enc, '"'); |
419 | encode_ch (enc, '"'); |
203 | |
420 | |
204 | if (enc->flags & F_SPACE_BEFORE) SPACE; |
421 | if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); |
205 | encode_ch (enc, ':'); |
422 | encode_ch (enc, ':'); |
206 | if (enc->flags & F_SPACE_AFTER ) SPACE; |
423 | if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); |
207 | encode_sv (enc, HeVAL (he)); |
|
|
208 | } |
424 | } |
209 | |
425 | |
210 | // compare hash entries, used when all keys are bytestrings |
426 | // compare hash entries, used when all keys are bytestrings |
211 | static int |
427 | static int |
212 | he_cmp_fast (const void *a_, const void *b_) |
428 | he_cmp_fast (const void *a_, const void *b_) |
… | |
… | |
217 | HE *b = *(HE **)b_; |
433 | HE *b = *(HE **)b_; |
218 | |
434 | |
219 | STRLEN la = HeKLEN (a); |
435 | STRLEN la = HeKLEN (a); |
220 | STRLEN lb = HeKLEN (b); |
436 | STRLEN lb = HeKLEN (b); |
221 | |
437 | |
222 | if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
438 | if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la))) |
223 | cmp = la < lb ? -1 : la == lb ? 0 : 1; |
439 | cmp = lb - la; |
224 | |
440 | |
225 | return cmp; |
441 | return cmp; |
226 | } |
442 | } |
227 | |
443 | |
228 | // compare hash entries, used when some keys are sv's or utf-x |
444 | // compare hash entries, used when some keys are sv's or utf-x |
229 | static int |
445 | static int |
230 | he_cmp_slow (const void *a, const void *b) |
446 | he_cmp_slow (const void *a, const void *b) |
231 | { |
447 | { |
232 | return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
448 | return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a)); |
233 | } |
449 | } |
234 | |
450 | |
235 | static void |
451 | static void |
236 | encode_hv (enc_t *enc, HV *hv) |
452 | encode_hv (enc_t *enc, HV *hv) |
237 | { |
453 | { |
238 | int count, i; |
454 | HE *he; |
239 | |
455 | |
240 | encode_ch (enc, '{'); NL; ++enc->indent; |
456 | if (enc->indent >= enc->maxdepth) |
|
|
457 | croak ("data structure too deep (hit recursion limit)"); |
241 | |
458 | |
242 | if ((count = hv_iterinit (hv))) |
459 | encode_ch (enc, '{'); |
243 | { |
460 | |
244 | // for canonical output we have to sort by keys first |
461 | // for canonical output we have to sort by keys first |
245 | // actually, this is mostly due to the stupid so-called |
462 | // actually, this is mostly due to the stupid so-called |
246 | // security workaround added somewhere in 5.8.x. |
463 | // security workaround added somewhere in 5.8.x. |
247 | // that randomises hash orderings |
464 | // that randomises hash orderings |
248 | if (enc->flags & F_CANONICAL) |
465 | if (enc->json.flags & F_CANONICAL) |
|
|
466 | { |
|
|
467 | int count = hv_iterinit (hv); |
|
|
468 | |
|
|
469 | if (SvMAGICAL (hv)) |
249 | { |
470 | { |
250 | HE *he, *hes [count]; |
471 | // need to count by iterating. could improve by dynamically building the vector below |
|
|
472 | // but I don't care for the speed of this special case. |
|
|
473 | // note also that we will run into undefined behaviour when the two iterations |
|
|
474 | // do not result in the same count, something I might care for in some later release. |
|
|
475 | |
|
|
476 | count = 0; |
|
|
477 | while (hv_iternext (hv)) |
|
|
478 | ++count; |
|
|
479 | |
|
|
480 | hv_iterinit (hv); |
|
|
481 | } |
|
|
482 | |
|
|
483 | if (count) |
|
|
484 | { |
251 | int fast = 1; |
485 | int i, fast = 1; |
|
|
486 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
|
|
487 | HE **hes = _alloca (count * sizeof (HE)); |
|
|
488 | #else |
|
|
489 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
|
|
490 | #endif |
252 | |
491 | |
253 | i = 0; |
492 | i = 0; |
254 | while ((he = hv_iternext (hv))) |
493 | while ((he = hv_iternext (hv))) |
255 | { |
494 | { |
256 | hes [i++] = he; |
495 | hes [i++] = he; |
… | |
… | |
262 | |
501 | |
263 | if (fast) |
502 | if (fast) |
264 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
503 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
265 | else |
504 | else |
266 | { |
505 | { |
267 | // hack to disable "use bytes" |
506 | // hack to forcefully disable "use bytes" |
268 | COP *oldcop = PL_curcop, cop; |
507 | COP cop = *PL_curcop; |
269 | cop.op_private = 0; |
508 | cop.op_private = 0; |
|
|
509 | |
|
|
510 | ENTER; |
|
|
511 | SAVETMPS; |
|
|
512 | |
|
|
513 | SAVEVPTR (PL_curcop); |
270 | PL_curcop = &cop; |
514 | PL_curcop = &cop; |
271 | |
515 | |
272 | SAVETMPS; |
|
|
273 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
516 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
|
|
517 | |
274 | FREETMPS; |
518 | FREETMPS; |
275 | |
519 | LEAVE; |
276 | PL_curcop = oldcop; |
|
|
277 | } |
520 | } |
278 | |
521 | |
279 | for (i = 0; i < count; ++i) |
522 | encode_nl (enc); ++enc->indent; |
|
|
523 | |
|
|
524 | while (count--) |
280 | { |
525 | { |
281 | INDENT; |
526 | encode_indent (enc); |
|
|
527 | he = hes [count]; |
282 | encode_he (enc, hes [i]); |
528 | encode_hk (enc, he); |
|
|
529 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
283 | |
530 | |
284 | if (i < count - 1) |
531 | if (count) |
285 | COMMA; |
532 | encode_comma (enc); |
286 | } |
533 | } |
287 | |
534 | |
|
|
535 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
536 | } |
|
|
537 | } |
|
|
538 | else |
|
|
539 | { |
|
|
540 | if (hv_iterinit (hv) || SvMAGICAL (hv)) |
|
|
541 | if ((he = hv_iternext (hv))) |
288 | NL; |
542 | { |
|
|
543 | encode_nl (enc); ++enc->indent; |
|
|
544 | |
|
|
545 | for (;;) |
|
|
546 | { |
|
|
547 | encode_indent (enc); |
|
|
548 | encode_hk (enc, he); |
|
|
549 | encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he)); |
|
|
550 | |
|
|
551 | if (!(he = hv_iternext (hv))) |
|
|
552 | break; |
|
|
553 | |
|
|
554 | encode_comma (enc); |
|
|
555 | } |
|
|
556 | |
|
|
557 | encode_nl (enc); --enc->indent; encode_indent (enc); |
|
|
558 | } |
|
|
559 | } |
|
|
560 | |
|
|
561 | encode_ch (enc, '}'); |
|
|
562 | } |
|
|
563 | |
|
|
564 | // encode objects, arrays and special \0=false and \1=true values. |
|
|
565 | static void |
|
|
566 | encode_rv (enc_t *enc, SV *sv) |
|
|
567 | { |
|
|
568 | svtype svt; |
|
|
569 | |
|
|
570 | SvGETMAGIC (sv); |
|
|
571 | svt = SvTYPE (sv); |
|
|
572 | |
|
|
573 | if (expect_false (SvOBJECT (sv))) |
|
|
574 | { |
|
|
575 | HV *stash = !JSON_SLOW || json_boolean_stash |
|
|
576 | ? json_boolean_stash |
|
|
577 | : gv_stashpv ("JSON::XS::Boolean", 1); |
|
|
578 | |
|
|
579 | if (SvSTASH (sv) == stash) |
|
|
580 | { |
|
|
581 | if (SvIV (sv)) |
|
|
582 | encode_str (enc, "true", 4, 0); |
|
|
583 | else |
|
|
584 | encode_str (enc, "false", 5, 0); |
289 | } |
585 | } |
290 | else |
586 | else |
291 | { |
587 | { |
292 | SV *sv; |
588 | #if 0 |
293 | HE *he = hv_iternext (hv); |
589 | if (0 && sv_derived_from (rv, "JSON::Literal")) |
294 | |
|
|
295 | for (;;) |
|
|
296 | { |
590 | { |
297 | INDENT; |
591 | // not yet |
298 | encode_he (enc, he); |
|
|
299 | |
|
|
300 | if (!(he = hv_iternext (hv))) |
|
|
301 | break; |
|
|
302 | |
|
|
303 | COMMA; |
|
|
304 | } |
592 | } |
305 | |
593 | #endif |
|
|
594 | if (enc->json.flags & F_CONV_BLESSED) |
306 | NL; |
595 | { |
|
|
596 | // we re-bless the reference to get overload and other niceties right |
|
|
597 | GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0); |
|
|
598 | |
|
|
599 | if (to_json) |
|
|
600 | { |
|
|
601 | dSP; |
|
|
602 | |
|
|
603 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
604 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
|
|
605 | |
|
|
606 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
607 | PUTBACK; |
|
|
608 | call_sv ((SV *)GvCV (to_json), G_SCALAR); |
|
|
609 | SPAGAIN; |
|
|
610 | |
|
|
611 | // catch this surprisingly common error |
|
|
612 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
613 | croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
|
614 | |
|
|
615 | sv = POPs; |
|
|
616 | PUTBACK; |
|
|
617 | |
|
|
618 | encode_sv (enc, sv); |
|
|
619 | |
|
|
620 | FREETMPS; LEAVE; |
|
|
621 | } |
|
|
622 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
623 | encode_str (enc, "null", 4, 0); |
|
|
624 | else |
|
|
625 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it", |
|
|
626 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
627 | } |
|
|
628 | else if (enc->json.flags & F_ALLOW_BLESSED) |
|
|
629 | encode_str (enc, "null", 4, 0); |
|
|
630 | else |
|
|
631 | croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", |
|
|
632 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
307 | } |
633 | } |
308 | } |
634 | } |
|
|
635 | else if (svt == SVt_PVHV) |
|
|
636 | encode_hv (enc, (HV *)sv); |
|
|
637 | else if (svt == SVt_PVAV) |
|
|
638 | encode_av (enc, (AV *)sv); |
|
|
639 | else if (svt < SVt_PVAV) |
|
|
640 | { |
|
|
641 | STRLEN len = 0; |
|
|
642 | char *pv = svt ? SvPV (sv, len) : 0; |
309 | |
643 | |
310 | --enc->indent; INDENT; encode_ch (enc, '}'); |
644 | if (len == 1 && *pv == '1') |
|
|
645 | encode_str (enc, "true", 4, 0); |
|
|
646 | else if (len == 1 && *pv == '0') |
|
|
647 | encode_str (enc, "false", 5, 0); |
|
|
648 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
649 | encode_str (enc, "null", 4, 0); |
|
|
650 | else |
|
|
651 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
652 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
653 | } |
|
|
654 | else if (enc->json.flags & F_ALLOW_UNKNOWN) |
|
|
655 | encode_str (enc, "null", 4, 0); |
|
|
656 | else |
|
|
657 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
658 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
311 | } |
659 | } |
312 | |
660 | |
313 | static void |
661 | static void |
314 | encode_sv (enc_t *enc, SV *sv) |
662 | encode_sv (enc_t *enc, SV *sv) |
315 | { |
663 | { |
|
|
664 | SvGETMAGIC (sv); |
|
|
665 | |
316 | if (SvPOKp (sv)) |
666 | if (SvPOKp (sv)) |
317 | { |
667 | { |
318 | STRLEN len; |
668 | STRLEN len; |
319 | char *str = SvPV (sv, len); |
669 | char *str = SvPV (sv, len); |
320 | encode_ch (enc, '"'); |
670 | encode_ch (enc, '"'); |
321 | encode_str (enc, str, len, SvUTF8 (sv)); |
671 | encode_str (enc, str, len, SvUTF8 (sv)); |
322 | encode_ch (enc, '"'); |
672 | encode_ch (enc, '"'); |
323 | } |
673 | } |
324 | else if (SvNOKp (sv)) |
674 | else if (SvNOKp (sv)) |
325 | { |
675 | { |
|
|
676 | // trust that perl will do the right thing w.r.t. JSON syntax. |
326 | need (enc, NV_DIG + 32); |
677 | need (enc, NV_DIG + 32); |
327 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
678 | Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
328 | enc->cur += strlen (enc->cur); |
679 | enc->cur += strlen (enc->cur); |
329 | } |
680 | } |
330 | else if (SvIOKp (sv)) |
681 | else if (SvIOKp (sv)) |
331 | { |
682 | { |
|
|
683 | // we assume we can always read an IV as a UV and vice versa |
|
|
684 | // we assume two's complement |
|
|
685 | // we assume no aliasing issues in the union |
|
|
686 | if (SvIsUV (sv) ? SvUVX (sv) <= 59000 |
|
|
687 | : SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000) |
|
|
688 | { |
|
|
689 | // optimise the "small number case" |
|
|
690 | // code will likely be branchless and use only a single multiplication |
|
|
691 | // works for numbers up to 59074 |
|
|
692 | I32 i = SvIVX (sv); |
|
|
693 | U32 u; |
|
|
694 | char digit, nz = 0; |
|
|
695 | |
332 | need (enc, 64); |
696 | need (enc, 6); |
|
|
697 | |
|
|
698 | *enc->cur = '-'; enc->cur += i < 0 ? 1 : 0; |
|
|
699 | u = i < 0 ? -i : i; |
|
|
700 | |
|
|
701 | // convert to 4.28 fixed-point representation |
|
|
702 | u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits |
|
|
703 | |
|
|
704 | // now output digit by digit, each time masking out the integer part |
|
|
705 | // and multiplying by 5 while moving the decimal point one to the right, |
|
|
706 | // resulting in a net multiplication by 10. |
|
|
707 | // we always write the digit to memory but conditionally increment |
|
|
708 | // the pointer, to enable the use of conditional move instructions. |
|
|
709 | digit = u >> 28; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0xfffffffUL) * 5; |
|
|
710 | digit = u >> 27; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x7ffffffUL) * 5; |
|
|
711 | digit = u >> 26; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x3ffffffUL) * 5; |
|
|
712 | digit = u >> 25; *enc->cur = digit + '0'; enc->cur += (nz = nz || digit); u = (u & 0x1ffffffUL) * 5; |
|
|
713 | digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0' |
|
|
714 | } |
|
|
715 | else |
|
|
716 | { |
|
|
717 | // large integer, use the (rather slow) snprintf way. |
|
|
718 | need (enc, IVUV_MAXCHARS); |
333 | enc->cur += |
719 | enc->cur += |
334 | SvIsUV(sv) |
720 | SvIsUV(sv) |
335 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
721 | ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) |
336 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
722 | : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); |
|
|
723 | } |
337 | } |
724 | } |
338 | else if (SvROK (sv)) |
725 | else if (SvROK (sv)) |
339 | { |
726 | encode_rv (enc, SvRV (sv)); |
340 | if (!--enc->max_recurse) |
727 | else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) |
341 | croak ("data structure too deep (hit recursion limit)"); |
|
|
342 | |
|
|
343 | sv = SvRV (sv); |
|
|
344 | |
|
|
345 | switch (SvTYPE (sv)) |
|
|
346 | { |
|
|
347 | case SVt_PVAV: encode_av (enc, (AV *)sv); break; |
|
|
348 | case SVt_PVHV: encode_hv (enc, (HV *)sv); break; |
|
|
349 | |
|
|
350 | default: |
|
|
351 | croak ("JSON can only represent references to arrays or hashes"); |
|
|
352 | } |
|
|
353 | } |
|
|
354 | else if (!SvOK (sv)) |
|
|
355 | encode_str (enc, "null", 4, 0); |
728 | encode_str (enc, "null", 4, 0); |
356 | else |
729 | else |
357 | croak ("encountered perl type that JSON cannot handle"); |
730 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
|
|
731 | SvPV_nolen (sv), SvFLAGS (sv)); |
358 | } |
732 | } |
359 | |
733 | |
360 | static SV * |
734 | static SV * |
361 | encode_json (SV *scalar, UV flags) |
735 | encode_json (SV *scalar, JSON *json) |
362 | { |
736 | { |
363 | enc_t enc; |
737 | enc_t enc; |
364 | enc.flags = flags; |
738 | |
|
|
739 | if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
|
|
740 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
|
|
741 | |
|
|
742 | enc.json = *json; |
365 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
743 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
366 | enc.cur = SvPVX (enc.sv); |
744 | enc.cur = SvPVX (enc.sv); |
367 | enc.end = SvEND (enc.sv); |
745 | enc.end = SvEND (enc.sv); |
368 | enc.max_recurse = 0; |
|
|
369 | enc.indent = 0; |
746 | enc.indent = 0; |
|
|
747 | enc.maxdepth = DEC_DEPTH (enc.json.flags); |
|
|
748 | enc.limit = enc.json.flags & F_ASCII ? 0x000080UL |
|
|
749 | : enc.json.flags & F_LATIN1 ? 0x000100UL |
|
|
750 | : 0x110000UL; |
370 | |
751 | |
371 | SvPOK_only (enc.sv); |
752 | SvPOK_only (enc.sv); |
372 | encode_sv (&enc, scalar); |
753 | encode_sv (&enc, scalar); |
373 | |
754 | |
|
|
755 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
756 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
|
|
757 | |
374 | if (!(flags & (F_ASCII | F_UTF8))) |
758 | if (!(enc.json.flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
375 | SvUTF8_on (enc.sv); |
759 | SvUTF8_on (enc.sv); |
376 | |
760 | |
377 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
761 | if (enc.json.flags & F_SHRINK) |
|
|
762 | shrink (enc.sv); |
|
|
763 | |
378 | return enc.sv; |
764 | return enc.sv; |
379 | } |
765 | } |
380 | |
766 | |
381 | ///////////////////////////////////////////////////////////////////////////// |
767 | ///////////////////////////////////////////////////////////////////////////// |
|
|
768 | // decoder |
382 | |
769 | |
383 | #define WS \ |
770 | // structure used for decoding JSON |
|
|
771 | typedef struct |
|
|
772 | { |
|
|
773 | char *cur; // current parser pointer |
|
|
774 | char *end; // end of input string |
|
|
775 | const char *err; // parse error, if != 0 |
|
|
776 | JSON json; |
|
|
777 | U32 depth; // recursion depth |
|
|
778 | U32 maxdepth; // recursion depth limit |
|
|
779 | } dec_t; |
|
|
780 | |
|
|
781 | INLINE void |
|
|
782 | decode_comment (dec_t *dec) |
|
|
783 | { |
|
|
784 | // only '#'-style comments allowed a.t.m. |
|
|
785 | |
|
|
786 | while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d) |
|
|
787 | ++dec->cur; |
|
|
788 | } |
|
|
789 | |
|
|
790 | INLINE void |
|
|
791 | decode_ws (dec_t *dec) |
|
|
792 | { |
384 | for (;;) \ |
793 | for (;;) |
385 | { \ |
794 | { |
386 | char ch = *dec->cur; \ |
795 | char ch = *dec->cur; |
|
|
796 | |
387 | if (ch > 0x20 \ |
797 | if (ch > 0x20) |
|
|
798 | { |
|
|
799 | if (expect_false (ch == '#')) |
|
|
800 | { |
|
|
801 | if (dec->json.flags & F_RELAXED) |
|
|
802 | decode_comment (dec); |
|
|
803 | else |
|
|
804 | break; |
|
|
805 | } |
|
|
806 | else |
|
|
807 | break; |
|
|
808 | } |
388 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ |
809 | else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09) |
389 | break; \ |
810 | break; // parse error, but let higher level handle it, gives better error messages |
|
|
811 | |
390 | ++dec->cur; \ |
812 | ++dec->cur; |
391 | } |
813 | } |
|
|
814 | } |
392 | |
815 | |
393 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
816 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
|
|
817 | |
394 | #define EXPECT_CH(ch) SB \ |
818 | #define EXPECT_CH(ch) SB \ |
395 | if (*dec->cur != ch) \ |
819 | if (*dec->cur != ch) \ |
396 | ERR (# ch " expected"); \ |
820 | ERR (# ch " expected"); \ |
397 | ++dec->cur; \ |
821 | ++dec->cur; \ |
398 | SE |
822 | SE |
399 | |
823 | |
|
|
824 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
|
|
825 | #define DEC_DEC_DEPTH --dec->depth |
|
|
826 | |
400 | static SV *decode_sv (dec_t *dec); |
827 | static SV *decode_sv (dec_t *dec); |
401 | |
|
|
402 | #define APPEND_CH(ch) SB \ |
|
|
403 | SvGROW (sv, cur + 1 + 1); \ |
|
|
404 | SvPVX (sv)[cur++] = (ch); \ |
|
|
405 | SE |
|
|
406 | |
828 | |
407 | static signed char decode_hexdigit[256]; |
829 | static signed char decode_hexdigit[256]; |
408 | |
830 | |
409 | static UV |
831 | static UV |
410 | decode_4hex (dec_t *dec) |
832 | decode_4hex (dec_t *dec) |
411 | { |
833 | { |
412 | signed char d1, d2, d3, d4; |
834 | signed char d1, d2, d3, d4; |
|
|
835 | unsigned char *cur = (unsigned char *)dec->cur; |
413 | |
836 | |
414 | d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]]; |
837 | d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected"); |
415 | if (d1 < 0) ERR ("four hexadecimal digits expected"); |
838 | d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected"); |
416 | d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]]; |
839 | d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected"); |
417 | if (d2 < 0) ERR ("four hexadecimal digits expected"); |
840 | d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected"); |
418 | d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]]; |
|
|
419 | if (d3 < 0) ERR ("four hexadecimal digits expected"); |
|
|
420 | d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]]; |
|
|
421 | if (d4 < 0) ERR ("four hexadecimal digits expected"); |
|
|
422 | |
841 | |
423 | dec->cur += 4; |
842 | dec->cur += 4; |
424 | |
843 | |
425 | return ((UV)d1) << 12 |
844 | return ((UV)d1) << 12 |
426 | | ((UV)d2) << 8 |
845 | | ((UV)d2) << 8 |
… | |
… | |
432 | } |
851 | } |
433 | |
852 | |
434 | static SV * |
853 | static SV * |
435 | decode_str (dec_t *dec) |
854 | decode_str (dec_t *dec) |
436 | { |
855 | { |
437 | SV *sv = NEWSV (0,2); |
856 | SV *sv = 0; |
438 | STRLEN cur = 0; |
|
|
439 | int utf8 = 0; |
857 | int utf8 = 0; |
|
|
858 | char *dec_cur = dec->cur; |
440 | |
859 | |
441 | for (;;) |
860 | do |
442 | { |
861 | { |
443 | unsigned char ch = *(unsigned char *)dec->cur; |
862 | char buf [SHORT_STRING_LEN + UTF8_MAXBYTES]; |
|
|
863 | char *cur = buf; |
444 | |
864 | |
445 | if (ch == '"') |
865 | do |
446 | break; |
|
|
447 | else if (ch == '\\') |
|
|
448 | { |
866 | { |
449 | switch (*++dec->cur) |
867 | unsigned char ch = *(unsigned char *)dec_cur++; |
|
|
868 | |
|
|
869 | if (expect_false (ch == '"')) |
450 | { |
870 | { |
451 | case '\\': |
871 | --dec_cur; |
452 | case '/': |
872 | break; |
453 | case '"': APPEND_CH (*dec->cur++); break; |
873 | } |
454 | |
874 | else if (expect_false (ch == '\\')) |
455 | case 'b': APPEND_CH ('\010'); ++dec->cur; break; |
875 | { |
456 | case 't': APPEND_CH ('\011'); ++dec->cur; break; |
876 | switch (*dec_cur) |
457 | case 'n': APPEND_CH ('\012'); ++dec->cur; break; |
|
|
458 | case 'f': APPEND_CH ('\014'); ++dec->cur; break; |
|
|
459 | case 'r': APPEND_CH ('\015'); ++dec->cur; break; |
|
|
460 | |
|
|
461 | case 'u': |
|
|
462 | { |
877 | { |
463 | UV lo, hi; |
878 | case '\\': |
464 | ++dec->cur; |
879 | case '/': |
|
|
880 | case '"': *cur++ = *dec_cur++; break; |
465 | |
881 | |
466 | hi = decode_4hex (dec); |
882 | case 'b': ++dec_cur; *cur++ = '\010'; break; |
467 | if (hi == (UV)-1) |
883 | case 't': ++dec_cur; *cur++ = '\011'; break; |
468 | goto fail; |
884 | case 'n': ++dec_cur; *cur++ = '\012'; break; |
|
|
885 | case 'f': ++dec_cur; *cur++ = '\014'; break; |
|
|
886 | case 'r': ++dec_cur; *cur++ = '\015'; break; |
469 | |
887 | |
470 | // possibly a surrogate pair |
888 | case 'u': |
471 | if (hi >= 0xd800 && hi < 0xdc00) |
|
|
472 | { |
889 | { |
473 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
890 | UV lo, hi; |
474 | ERR ("illegal surrogate character"); |
891 | ++dec_cur; |
475 | |
892 | |
476 | dec->cur += 2; |
893 | dec->cur = dec_cur; |
477 | |
|
|
478 | lo = decode_4hex (dec); |
894 | hi = decode_4hex (dec); |
|
|
895 | dec_cur = dec->cur; |
479 | if (lo == (UV)-1) |
896 | if (hi == (UV)-1) |
480 | goto fail; |
897 | goto fail; |
481 | |
898 | |
|
|
899 | // possibly a surrogate pair |
|
|
900 | if (hi >= 0xd800) |
|
|
901 | if (hi < 0xdc00) |
|
|
902 | { |
|
|
903 | if (dec_cur [0] != '\\' || dec_cur [1] != 'u') |
|
|
904 | ERR ("missing low surrogate character in surrogate pair"); |
|
|
905 | |
|
|
906 | dec_cur += 2; |
|
|
907 | |
|
|
908 | dec->cur = dec_cur; |
|
|
909 | lo = decode_4hex (dec); |
|
|
910 | dec_cur = dec->cur; |
|
|
911 | if (lo == (UV)-1) |
|
|
912 | goto fail; |
|
|
913 | |
482 | if (lo < 0xdc00 || lo >= 0xe000) |
914 | if (lo < 0xdc00 || lo >= 0xe000) |
483 | ERR ("surrogate pair expected"); |
915 | ERR ("surrogate pair expected"); |
484 | |
916 | |
485 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
917 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
|
|
918 | } |
|
|
919 | else if (hi < 0xe000) |
|
|
920 | ERR ("missing high surrogate character in surrogate pair"); |
|
|
921 | |
|
|
922 | if (hi >= 0x80) |
|
|
923 | { |
|
|
924 | utf8 = 1; |
|
|
925 | |
|
|
926 | cur = encode_utf8 (cur, hi); |
|
|
927 | } |
|
|
928 | else |
|
|
929 | *cur++ = hi; |
486 | } |
930 | } |
487 | else if (lo >= 0xdc00 && lo < 0xe000) |
|
|
488 | ERR ("illegal surrogate character"); |
|
|
489 | |
|
|
490 | if (hi >= 0x80) |
|
|
491 | { |
931 | break; |
492 | utf8 = 1; |
|
|
493 | |
932 | |
494 | SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits |
|
|
495 | cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv); |
|
|
496 | } |
|
|
497 | else |
933 | default: |
498 | APPEND_CH (hi); |
934 | --dec_cur; |
|
|
935 | ERR ("illegal backslash escape sequence in string"); |
499 | } |
936 | } |
|
|
937 | } |
|
|
938 | else if (expect_true (ch >= 0x20 && ch < 0x80)) |
|
|
939 | *cur++ = ch; |
|
|
940 | else if (ch >= 0x80) |
|
|
941 | { |
|
|
942 | STRLEN clen; |
|
|
943 | UV uch; |
|
|
944 | |
|
|
945 | --dec_cur; |
|
|
946 | |
|
|
947 | uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen); |
|
|
948 | if (clen == (STRLEN)-1) |
|
|
949 | ERR ("malformed UTF-8 character in JSON string"); |
|
|
950 | |
|
|
951 | do |
|
|
952 | *cur++ = *dec_cur++; |
|
|
953 | while (--clen); |
|
|
954 | |
|
|
955 | utf8 = 1; |
|
|
956 | } |
|
|
957 | else |
|
|
958 | { |
|
|
959 | --dec_cur; |
|
|
960 | |
|
|
961 | if (!ch) |
|
|
962 | ERR ("unexpected end of string while parsing JSON string"); |
500 | break; |
963 | else |
|
|
964 | ERR ("invalid character encountered while parsing JSON string"); |
501 | } |
965 | } |
502 | } |
966 | } |
503 | else if (ch >= 0x20 && ch <= 0x7f) |
967 | while (cur < buf + SHORT_STRING_LEN); |
504 | APPEND_CH (*dec->cur++); |
968 | |
505 | else if (ch >= 0x80) |
969 | { |
|
|
970 | STRLEN len = cur - buf; |
|
|
971 | |
|
|
972 | if (sv) |
506 | { |
973 | { |
507 | STRLEN clen; |
974 | SvGROW (sv, SvCUR (sv) + len + 1); |
508 | UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
975 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
509 | if (clen < 0) |
976 | SvCUR_set (sv, SvCUR (sv) + len); |
510 | ERR ("malformed UTF-8 character in string, cannot convert to JSON"); |
|
|
511 | |
|
|
512 | SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits |
|
|
513 | memcpy (SvPVX (sv) + cur, dec->cur, clen); |
|
|
514 | dec->cur += clen; |
|
|
515 | } |
977 | } |
516 | else |
978 | else |
517 | ERR ("invalid character encountered"); |
979 | sv = newSVpvn (buf, len); |
518 | } |
980 | } |
|
|
981 | } |
|
|
982 | while (*dec_cur != '"'); |
519 | |
983 | |
520 | ++dec->cur; |
984 | ++dec_cur; |
521 | |
985 | |
|
|
986 | if (sv) |
|
|
987 | { |
522 | SvPOK_only (sv); |
988 | SvPOK_only (sv); |
523 | |
|
|
524 | SvCUR_set (sv, cur); |
|
|
525 | *SvEND (sv) = 0; |
989 | *SvEND (sv) = 0; |
526 | |
990 | |
527 | if (utf8) |
991 | if (utf8) |
528 | SvUTF8_on (sv); |
992 | SvUTF8_on (sv); |
|
|
993 | } |
|
|
994 | else |
|
|
995 | sv = newSVpvn ("", 0); |
529 | |
996 | |
|
|
997 | dec->cur = dec_cur; |
530 | return sv; |
998 | return sv; |
531 | |
999 | |
532 | fail: |
1000 | fail: |
533 | SvREFCNT_dec (sv); |
1001 | dec->cur = dec_cur; |
534 | return 0; |
1002 | return 0; |
535 | } |
1003 | } |
536 | |
1004 | |
537 | static SV * |
1005 | static SV * |
538 | decode_num (dec_t *dec) |
1006 | decode_num (dec_t *dec) |
… | |
… | |
548 | { |
1016 | { |
549 | ++dec->cur; |
1017 | ++dec->cur; |
550 | if (*dec->cur >= '0' && *dec->cur <= '9') |
1018 | if (*dec->cur >= '0' && *dec->cur <= '9') |
551 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
1019 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
552 | } |
1020 | } |
553 | |
1021 | else if (*dec->cur < '0' || *dec->cur > '9') |
554 | // int |
1022 | ERR ("malformed number (no digits after initial minus)"); |
|
|
1023 | else |
|
|
1024 | do |
|
|
1025 | { |
|
|
1026 | ++dec->cur; |
|
|
1027 | } |
555 | while (*dec->cur >= '0' && *dec->cur <= '9') |
1028 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
556 | ++dec->cur; |
|
|
557 | |
1029 | |
558 | // [frac] |
1030 | // [frac] |
559 | if (*dec->cur == '.') |
1031 | if (*dec->cur == '.') |
560 | { |
1032 | { |
561 | is_nv = 1; |
1033 | ++dec->cur; |
|
|
1034 | |
|
|
1035 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
1036 | ERR ("malformed number (no digits after decimal point)"); |
562 | |
1037 | |
563 | do |
1038 | do |
564 | { |
1039 | { |
565 | ++dec->cur; |
1040 | ++dec->cur; |
566 | } |
1041 | } |
567 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
1042 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
|
|
1043 | |
|
|
1044 | is_nv = 1; |
568 | } |
1045 | } |
569 | |
1046 | |
570 | // [exp] |
1047 | // [exp] |
571 | if (*dec->cur == 'e' || *dec->cur == 'E') |
1048 | if (*dec->cur == 'e' || *dec->cur == 'E') |
572 | { |
1049 | { |
573 | is_nv = 1; |
|
|
574 | |
|
|
575 | ++dec->cur; |
1050 | ++dec->cur; |
|
|
1051 | |
576 | if (*dec->cur == '-' || *dec->cur == '+') |
1052 | if (*dec->cur == '-' || *dec->cur == '+') |
577 | ++dec->cur; |
1053 | ++dec->cur; |
578 | |
1054 | |
|
|
1055 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
1056 | ERR ("malformed number (no digits after exp sign)"); |
|
|
1057 | |
|
|
1058 | do |
|
|
1059 | { |
|
|
1060 | ++dec->cur; |
|
|
1061 | } |
579 | while (*dec->cur >= '0' && *dec->cur <= '9') |
1062 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
580 | ++dec->cur; |
1063 | |
|
|
1064 | is_nv = 1; |
581 | } |
1065 | } |
582 | |
1066 | |
583 | if (!is_nv) |
1067 | if (!is_nv) |
584 | { |
1068 | { |
585 | UV uv; |
1069 | int len = dec->cur - start; |
586 | int numtype = grok_number (start, dec->cur - start, &uv); |
1070 | |
587 | if (numtype & IS_NUMBER_IN_UV) |
1071 | // special case the rather common 1..5-digit-int case |
588 | if (numtype & IS_NUMBER_NEG) |
1072 | if (*start == '-') |
|
|
1073 | switch (len) |
589 | { |
1074 | { |
590 | if (uv < (UV)IV_MIN) |
1075 | case 2: return newSViv (-( start [1] - '0' * 1)); |
591 | return newSViv (-(IV)uv); |
1076 | case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11)); |
|
|
1077 | case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); |
|
|
1078 | case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); |
|
|
1079 | case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111)); |
592 | } |
1080 | } |
|
|
1081 | else |
|
|
1082 | switch (len) |
|
|
1083 | { |
|
|
1084 | case 1: return newSViv ( start [0] - '0' * 1); |
|
|
1085 | case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); |
|
|
1086 | case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); |
|
|
1087 | case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); |
|
|
1088 | case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111); |
|
|
1089 | } |
|
|
1090 | |
|
|
1091 | { |
|
|
1092 | UV uv; |
|
|
1093 | int numtype = grok_number (start, len, &uv); |
|
|
1094 | if (numtype & IS_NUMBER_IN_UV) |
|
|
1095 | if (numtype & IS_NUMBER_NEG) |
|
|
1096 | { |
|
|
1097 | if (uv < (UV)IV_MIN) |
|
|
1098 | return newSViv (-(IV)uv); |
|
|
1099 | } |
593 | else |
1100 | else |
594 | return newSVuv (uv); |
1101 | return newSVuv (uv); |
595 | } |
1102 | } |
596 | |
1103 | |
|
|
1104 | len -= *start == '-' ? 1 : 0; |
|
|
1105 | |
|
|
1106 | // does not fit into IV or UV, try NV |
|
|
1107 | if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len) |
|
|
1108 | #if defined (LDBL_DIG) |
|
|
1109 | || (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len) |
|
|
1110 | #endif |
|
|
1111 | ) |
|
|
1112 | // fits into NV without loss of precision |
|
|
1113 | return newSVnv (Atof (start)); |
|
|
1114 | |
|
|
1115 | // everything else fails, convert it to a string |
|
|
1116 | return newSVpvn (start, dec->cur - start); |
|
|
1117 | } |
|
|
1118 | |
|
|
1119 | // loss of precision here |
597 | return newSVnv (Atof (start)); |
1120 | return newSVnv (Atof (start)); |
598 | |
1121 | |
599 | fail: |
1122 | fail: |
600 | return 0; |
1123 | return 0; |
601 | } |
1124 | } |
… | |
… | |
603 | static SV * |
1126 | static SV * |
604 | decode_av (dec_t *dec) |
1127 | decode_av (dec_t *dec) |
605 | { |
1128 | { |
606 | AV *av = newAV (); |
1129 | AV *av = newAV (); |
607 | |
1130 | |
|
|
1131 | DEC_INC_DEPTH; |
|
|
1132 | decode_ws (dec); |
|
|
1133 | |
|
|
1134 | if (*dec->cur == ']') |
|
|
1135 | ++dec->cur; |
|
|
1136 | else |
608 | for (;;) |
1137 | for (;;) |
609 | { |
1138 | { |
610 | SV *value; |
1139 | SV *value; |
611 | |
1140 | |
612 | value = decode_sv (dec); |
1141 | value = decode_sv (dec); |
613 | if (!value) |
1142 | if (!value) |
614 | goto fail; |
1143 | goto fail; |
615 | |
1144 | |
616 | av_push (av, value); |
1145 | av_push (av, value); |
617 | |
1146 | |
618 | WS; |
1147 | decode_ws (dec); |
619 | |
1148 | |
620 | if (*dec->cur == ']') |
1149 | if (*dec->cur == ']') |
621 | { |
1150 | { |
622 | ++dec->cur; |
1151 | ++dec->cur; |
623 | break; |
1152 | break; |
|
|
1153 | } |
624 | } |
1154 | |
625 | |
|
|
626 | if (*dec->cur != ',') |
1155 | if (*dec->cur != ',') |
627 | ERR (", or ] expected while parsing array"); |
1156 | ERR (", or ] expected while parsing array"); |
628 | |
1157 | |
629 | ++dec->cur; |
1158 | ++dec->cur; |
|
|
1159 | |
|
|
1160 | decode_ws (dec); |
|
|
1161 | |
|
|
1162 | if (*dec->cur == ']' && dec->json.flags & F_RELAXED) |
|
|
1163 | { |
|
|
1164 | ++dec->cur; |
|
|
1165 | break; |
|
|
1166 | } |
630 | } |
1167 | } |
631 | |
1168 | |
|
|
1169 | DEC_DEC_DEPTH; |
632 | return newRV_noinc ((SV *)av); |
1170 | return newRV_noinc ((SV *)av); |
633 | |
1171 | |
634 | fail: |
1172 | fail: |
635 | SvREFCNT_dec (av); |
1173 | SvREFCNT_dec (av); |
|
|
1174 | DEC_DEC_DEPTH; |
636 | return 0; |
1175 | return 0; |
637 | } |
1176 | } |
638 | |
1177 | |
639 | static SV * |
1178 | static SV * |
640 | decode_hv (dec_t *dec) |
1179 | decode_hv (dec_t *dec) |
641 | { |
1180 | { |
|
|
1181 | SV *sv; |
642 | HV *hv = newHV (); |
1182 | HV *hv = newHV (); |
643 | |
1183 | |
|
|
1184 | DEC_INC_DEPTH; |
|
|
1185 | decode_ws (dec); |
|
|
1186 | |
|
|
1187 | if (*dec->cur == '}') |
|
|
1188 | ++dec->cur; |
|
|
1189 | else |
644 | for (;;) |
1190 | for (;;) |
645 | { |
1191 | { |
646 | SV *key, *value; |
|
|
647 | |
|
|
648 | WS; EXPECT_CH ('"'); |
1192 | EXPECT_CH ('"'); |
649 | |
1193 | |
650 | key = decode_str (dec); |
1194 | // heuristic: assume that |
651 | if (!key) |
1195 | // a) decode_str + hv_store_ent are abysmally slow. |
652 | goto fail; |
1196 | // b) most hash keys are short, simple ascii text. |
653 | |
1197 | // => try to "fast-match" such strings to avoid |
654 | WS; EXPECT_CH (':'); |
1198 | // the overhead of decode_str + hv_store_ent. |
655 | |
|
|
656 | value = decode_sv (dec); |
|
|
657 | if (!value) |
|
|
658 | { |
1199 | { |
|
|
1200 | SV *value; |
|
|
1201 | char *p = dec->cur; |
|
|
1202 | char *e = p + 24; // only try up to 24 bytes |
|
|
1203 | |
|
|
1204 | for (;;) |
|
|
1205 | { |
|
|
1206 | // the >= 0x80 is false on most architectures |
|
|
1207 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
|
|
1208 | { |
|
|
1209 | // slow path, back up and use decode_str |
|
|
1210 | SV *key = decode_str (dec); |
|
|
1211 | if (!key) |
|
|
1212 | goto fail; |
|
|
1213 | |
|
|
1214 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1215 | |
|
|
1216 | decode_ws (dec); |
|
|
1217 | value = decode_sv (dec); |
|
|
1218 | if (!value) |
|
|
1219 | { |
|
|
1220 | SvREFCNT_dec (key); |
|
|
1221 | goto fail; |
|
|
1222 | } |
|
|
1223 | |
|
|
1224 | hv_store_ent (hv, key, value, 0); |
659 | SvREFCNT_dec (key); |
1225 | SvREFCNT_dec (key); |
|
|
1226 | |
|
|
1227 | break; |
|
|
1228 | } |
|
|
1229 | else if (*p == '"') |
|
|
1230 | { |
|
|
1231 | // fast path, got a simple key |
|
|
1232 | char *key = dec->cur; |
|
|
1233 | int len = p - key; |
|
|
1234 | dec->cur = p + 1; |
|
|
1235 | |
|
|
1236 | decode_ws (dec); EXPECT_CH (':'); |
|
|
1237 | |
|
|
1238 | decode_ws (dec); |
|
|
1239 | value = decode_sv (dec); |
|
|
1240 | if (!value) |
660 | goto fail; |
1241 | goto fail; |
|
|
1242 | |
|
|
1243 | hv_store (hv, key, len, value, 0); |
|
|
1244 | |
|
|
1245 | break; |
|
|
1246 | } |
|
|
1247 | |
|
|
1248 | ++p; |
|
|
1249 | } |
661 | } |
1250 | } |
662 | |
1251 | |
663 | //TODO: optimise |
1252 | decode_ws (dec); |
664 | hv_store_ent (hv, key, value, 0); |
|
|
665 | |
1253 | |
666 | WS; |
|
|
667 | |
|
|
668 | if (*dec->cur == '}') |
1254 | if (*dec->cur == '}') |
|
|
1255 | { |
|
|
1256 | ++dec->cur; |
|
|
1257 | break; |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | if (*dec->cur != ',') |
|
|
1261 | ERR (", or } expected while parsing object/hash"); |
|
|
1262 | |
|
|
1263 | ++dec->cur; |
|
|
1264 | |
|
|
1265 | decode_ws (dec); |
|
|
1266 | |
|
|
1267 | if (*dec->cur == '}' && dec->json.flags & F_RELAXED) |
|
|
1268 | { |
|
|
1269 | ++dec->cur; |
|
|
1270 | break; |
|
|
1271 | } |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | DEC_DEC_DEPTH; |
|
|
1275 | sv = newRV_noinc ((SV *)hv); |
|
|
1276 | |
|
|
1277 | // check filter callbacks |
|
|
1278 | if (dec->json.flags & F_HOOK) |
|
|
1279 | { |
|
|
1280 | if (dec->json.cb_sk_object && HvKEYS (hv) == 1) |
669 | { |
1281 | { |
670 | ++dec->cur; |
1282 | HE *cb, *he; |
671 | break; |
1283 | |
|
|
1284 | hv_iterinit (hv); |
|
|
1285 | he = hv_iternext (hv); |
|
|
1286 | hv_iterinit (hv); |
|
|
1287 | |
|
|
1288 | // the next line creates a mortal sv each time its called. |
|
|
1289 | // might want to optimise this for common cases. |
|
|
1290 | cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
1291 | |
|
|
1292 | if (cb) |
|
|
1293 | { |
|
|
1294 | dSP; |
|
|
1295 | int count; |
|
|
1296 | |
|
|
1297 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
1298 | XPUSHs (HeVAL (he)); |
|
|
1299 | |
|
|
1300 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
1301 | |
|
|
1302 | if (count == 1) |
|
|
1303 | { |
|
|
1304 | sv = newSVsv (POPs); |
|
|
1305 | FREETMPS; LEAVE; |
|
|
1306 | return sv; |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | FREETMPS; LEAVE; |
|
|
1310 | } |
672 | } |
1311 | } |
673 | |
1312 | |
674 | if (*dec->cur != ',') |
1313 | if (dec->json.cb_object) |
675 | ERR (", or } expected while parsing object/hash"); |
1314 | { |
|
|
1315 | dSP; |
|
|
1316 | int count; |
676 | |
1317 | |
677 | ++dec->cur; |
1318 | ENTER; SAVETMPS; PUSHMARK (SP); |
678 | } |
1319 | XPUSHs (sv_2mortal (sv)); |
679 | |
1320 | |
680 | return newRV_noinc ((SV *)hv); |
1321 | PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; |
|
|
1322 | |
|
|
1323 | if (count == 1) |
|
|
1324 | { |
|
|
1325 | sv = newSVsv (POPs); |
|
|
1326 | FREETMPS; LEAVE; |
|
|
1327 | return sv; |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | SvREFCNT_inc (sv); |
|
|
1331 | FREETMPS; LEAVE; |
|
|
1332 | } |
|
|
1333 | } |
|
|
1334 | |
|
|
1335 | return sv; |
681 | |
1336 | |
682 | fail: |
1337 | fail: |
683 | SvREFCNT_dec (hv); |
1338 | SvREFCNT_dec (hv); |
|
|
1339 | DEC_DEC_DEPTH; |
684 | return 0; |
1340 | return 0; |
685 | } |
1341 | } |
686 | |
1342 | |
687 | static SV * |
1343 | static SV * |
688 | decode_sv (dec_t *dec) |
1344 | decode_sv (dec_t *dec) |
689 | { |
1345 | { |
690 | WS; |
1346 | // the beauty of JSON: you need exactly one character lookahead |
|
|
1347 | // to parse everything. |
691 | switch (*dec->cur) |
1348 | switch (*dec->cur) |
692 | { |
1349 | { |
693 | case '"': ++dec->cur; return decode_str (dec); |
1350 | case '"': ++dec->cur; return decode_str (dec); |
694 | case '[': ++dec->cur; return decode_av (dec); |
1351 | case '[': ++dec->cur; return decode_av (dec); |
695 | case '{': ++dec->cur; return decode_hv (dec); |
1352 | case '{': ++dec->cur; return decode_hv (dec); |
696 | |
1353 | |
697 | case '-': |
1354 | case '-': |
698 | case '0': case '1': case '2': case '3': case '4': |
1355 | case '0': case '1': case '2': case '3': case '4': |
699 | case '5': case '6': case '7': case '8': case '9': |
1356 | case '5': case '6': case '7': case '8': case '9': |
700 | return decode_num (dec); |
1357 | return decode_num (dec); |
701 | |
1358 | |
702 | case 't': |
1359 | case 't': |
703 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
1360 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
704 | { |
1361 | { |
705 | dec->cur += 4; |
1362 | dec->cur += 4; |
|
|
1363 | #if JSON_SLOW |
|
|
1364 | json_true = get_bool ("JSON::XS::true"); |
|
|
1365 | #endif |
706 | return newSViv (1); |
1366 | return newSVsv (json_true); |
707 | } |
1367 | } |
708 | else |
1368 | else |
709 | ERR ("'true' expected"); |
1369 | ERR ("'true' expected"); |
710 | |
1370 | |
711 | break; |
1371 | break; |
712 | |
1372 | |
713 | case 'f': |
1373 | case 'f': |
714 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
1374 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
715 | { |
1375 | { |
716 | dec->cur += 5; |
1376 | dec->cur += 5; |
|
|
1377 | #if JSON_SLOW |
|
|
1378 | json_false = get_bool ("JSON::XS::false"); |
|
|
1379 | #endif |
717 | return newSViv (0); |
1380 | return newSVsv (json_false); |
718 | } |
1381 | } |
719 | else |
1382 | else |
720 | ERR ("'false' expected"); |
1383 | ERR ("'false' expected"); |
721 | |
1384 | |
722 | break; |
1385 | break; |
723 | |
1386 | |
724 | case 'n': |
1387 | case 'n': |
725 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
1388 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
726 | { |
1389 | { |
727 | dec->cur += 4; |
1390 | dec->cur += 4; |
728 | return newSViv (1); |
1391 | return newSVsv (&PL_sv_undef); |
729 | } |
1392 | } |
730 | else |
1393 | else |
731 | ERR ("'null' expected"); |
1394 | ERR ("'null' expected"); |
732 | |
1395 | |
733 | break; |
1396 | break; |
734 | |
1397 | |
735 | default: |
1398 | default: |
736 | ERR ("malformed json string"); |
1399 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
737 | break; |
1400 | break; |
738 | } |
1401 | } |
739 | |
1402 | |
740 | fail: |
1403 | fail: |
741 | return 0; |
1404 | return 0; |
742 | } |
1405 | } |
743 | |
1406 | |
744 | static SV * |
1407 | static SV * |
745 | decode_json (SV *string, UV flags) |
1408 | decode_json (SV *string, JSON *json, STRLEN *offset_return) |
746 | { |
1409 | { |
|
|
1410 | dec_t dec; |
|
|
1411 | STRLEN offset; |
747 | SV *sv; |
1412 | SV *sv; |
748 | |
1413 | |
|
|
1414 | SvGETMAGIC (string); |
|
|
1415 | SvUPGRADE (string, SVt_PV); |
|
|
1416 | |
|
|
1417 | if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags)) |
|
|
1418 | croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", |
|
|
1419 | (unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags)); |
|
|
1420 | |
749 | if (!(flags & F_UTF8)) |
1421 | if (json->flags & F_UTF8) |
|
|
1422 | sv_utf8_downgrade (string, 0); |
|
|
1423 | else |
750 | sv_utf8_upgrade (string); |
1424 | sv_utf8_upgrade (string); |
751 | |
1425 | |
752 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1426 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
753 | |
1427 | |
754 | dec_t dec; |
1428 | dec.json = *json; |
755 | dec.flags = flags; |
|
|
756 | dec.cur = SvPVX (string); |
1429 | dec.cur = SvPVX (string); |
757 | dec.end = SvEND (string); |
1430 | dec.end = SvEND (string); |
758 | dec.err = 0; |
1431 | dec.err = 0; |
|
|
1432 | dec.depth = 0; |
|
|
1433 | dec.maxdepth = DEC_DEPTH (dec.json.flags); |
759 | |
1434 | |
760 | *dec.end = 1; // invalid anywhere |
1435 | if (dec.json.cb_object || dec.json.cb_sk_object) |
|
|
1436 | dec.json.flags |= F_HOOK; |
|
|
1437 | |
|
|
1438 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1439 | |
|
|
1440 | decode_ws (&dec); |
761 | sv = decode_sv (&dec); |
1441 | sv = decode_sv (&dec); |
762 | *dec.end = 0; |
1442 | |
|
|
1443 | if (!(offset_return || !sv)) |
|
|
1444 | { |
|
|
1445 | // check for trailing garbage |
|
|
1446 | decode_ws (&dec); |
|
|
1447 | |
|
|
1448 | if (*dec.cur) |
|
|
1449 | { |
|
|
1450 | dec.err = "garbage after JSON object"; |
|
|
1451 | SvREFCNT_dec (sv); |
|
|
1452 | sv = 0; |
|
|
1453 | } |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | if (offset_return || !sv) |
|
|
1457 | { |
|
|
1458 | offset = dec.json.flags & F_UTF8 |
|
|
1459 | ? dec.cur - SvPVX (string) |
|
|
1460 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
1461 | |
|
|
1462 | if (offset_return) |
|
|
1463 | *offset_return = offset; |
|
|
1464 | } |
763 | |
1465 | |
764 | if (!sv) |
1466 | if (!sv) |
765 | { |
1467 | { |
766 | IV offset = utf8_distance (dec.cur, SvPVX (string)); |
|
|
767 | SV *uni = sv_newmortal (); |
1468 | SV *uni = sv_newmortal (); |
768 | |
1469 | |
|
|
1470 | // horrible hack to silence warning inside pv_uni_display |
|
|
1471 | COP cop = *PL_curcop; |
|
|
1472 | cop.cop_warnings = pWARN_NONE; |
|
|
1473 | ENTER; |
|
|
1474 | SAVEVPTR (PL_curcop); |
|
|
1475 | PL_curcop = &cop; |
769 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1476 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
|
|
1477 | LEAVE; |
|
|
1478 | |
770 | croak ("%s, at character %d (%s)", |
1479 | croak ("%s, at character offset %d [\"%s\"]", |
771 | dec.err, |
1480 | dec.err, |
772 | (int)offset, |
1481 | (int)offset, |
773 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1482 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
774 | } |
1483 | } |
775 | |
1484 | |
776 | sv_dump (sv);//D |
|
|
777 | return sv_2mortal (sv); |
1485 | sv = sv_2mortal (sv); |
|
|
1486 | |
|
|
1487 | if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
|
|
1488 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
|
|
1489 | |
|
|
1490 | return sv; |
778 | } |
1491 | } |
|
|
1492 | |
|
|
1493 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1494 | // incremental parser |
|
|
1495 | |
|
|
1496 | static void |
|
|
1497 | incr_parse (JSON *self) |
|
|
1498 | { |
|
|
1499 | const char *p = SvPVX (self->incr_text) + self->incr_pos; |
|
|
1500 | |
|
|
1501 | for (;;) |
|
|
1502 | { |
|
|
1503 | //printf ("loop pod %d *p<%c><%s>, mode %d nest %d\n", p - SvPVX (self->incr_text), *p, p, self->incr_mode, self->incr_nest);//D |
|
|
1504 | switch (self->incr_mode) |
|
|
1505 | { |
|
|
1506 | // only used for intiial whitespace skipping |
|
|
1507 | case INCR_M_WS: |
|
|
1508 | for (;;) |
|
|
1509 | { |
|
|
1510 | if (*p > 0x20) |
|
|
1511 | { |
|
|
1512 | self->incr_mode = INCR_M_JSON; |
|
|
1513 | goto incr_m_json; |
|
|
1514 | } |
|
|
1515 | else if (!*p) |
|
|
1516 | goto interrupt; |
|
|
1517 | |
|
|
1518 | ++p; |
|
|
1519 | } |
|
|
1520 | |
|
|
1521 | // skip a single char inside a string (for \\-processing) |
|
|
1522 | case INCR_M_BS: |
|
|
1523 | if (!*p) |
|
|
1524 | goto interrupt; |
|
|
1525 | |
|
|
1526 | ++p; |
|
|
1527 | self->incr_mode = INCR_M_STR; |
|
|
1528 | goto incr_m_str; |
|
|
1529 | |
|
|
1530 | // inside a string |
|
|
1531 | case INCR_M_STR: |
|
|
1532 | incr_m_str: |
|
|
1533 | for (;;) |
|
|
1534 | { |
|
|
1535 | if (*p == '"') |
|
|
1536 | { |
|
|
1537 | ++p; |
|
|
1538 | self->incr_mode = INCR_M_JSON; |
|
|
1539 | |
|
|
1540 | if (!self->incr_nest) |
|
|
1541 | goto interrupt; |
|
|
1542 | |
|
|
1543 | goto incr_m_json; |
|
|
1544 | } |
|
|
1545 | else if (*p == '\\') |
|
|
1546 | { |
|
|
1547 | ++p; // "virtually" consumes character after \ |
|
|
1548 | |
|
|
1549 | if (!*p) // if at end of string we have to switch modes |
|
|
1550 | { |
|
|
1551 | self->incr_mode = INCR_M_BS; |
|
|
1552 | goto interrupt; |
|
|
1553 | } |
|
|
1554 | } |
|
|
1555 | else if (!*p) |
|
|
1556 | goto interrupt; |
|
|
1557 | |
|
|
1558 | ++p; |
|
|
1559 | } |
|
|
1560 | |
|
|
1561 | // after initial ws, outside string |
|
|
1562 | case INCR_M_JSON: |
|
|
1563 | incr_m_json: |
|
|
1564 | for (;;) |
|
|
1565 | { |
|
|
1566 | switch (*p++) |
|
|
1567 | { |
|
|
1568 | case 0: |
|
|
1569 | --p; |
|
|
1570 | goto interrupt; |
|
|
1571 | |
|
|
1572 | case 0x09: |
|
|
1573 | case 0x0a: |
|
|
1574 | case 0x0d: |
|
|
1575 | case 0x20: |
|
|
1576 | if (!self->incr_nest) |
|
|
1577 | { |
|
|
1578 | --p; // do not eat the whitespace, let the next round do it |
|
|
1579 | goto interrupt; |
|
|
1580 | } |
|
|
1581 | break; |
|
|
1582 | |
|
|
1583 | case '"': |
|
|
1584 | self->incr_mode = INCR_M_STR; |
|
|
1585 | goto incr_m_str; |
|
|
1586 | |
|
|
1587 | case '[': |
|
|
1588 | case '{': |
|
|
1589 | ++self->incr_nest; |
|
|
1590 | break; |
|
|
1591 | |
|
|
1592 | case ']': |
|
|
1593 | case '}': |
|
|
1594 | if (!--self->incr_nest) |
|
|
1595 | goto interrupt; |
|
|
1596 | } |
|
|
1597 | } |
|
|
1598 | } |
|
|
1599 | |
|
|
1600 | modechange: |
|
|
1601 | ; |
|
|
1602 | } |
|
|
1603 | |
|
|
1604 | interrupt: |
|
|
1605 | self->incr_pos = p - SvPVX (self->incr_text); |
|
|
1606 | //printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1610 | // XS interface functions |
779 | |
1611 | |
780 | MODULE = JSON::XS PACKAGE = JSON::XS |
1612 | MODULE = JSON::XS PACKAGE = JSON::XS |
781 | |
1613 | |
782 | BOOT: |
1614 | BOOT: |
783 | { |
1615 | { |
784 | int i; |
1616 | int i; |
785 | |
1617 | |
786 | memset (decode_hexdigit, 0xff, 256); |
|
|
787 | for (i = 10; i--; ) |
1618 | for (i = 0; i < 256; ++i) |
788 | decode_hexdigit ['0' + i] = i; |
1619 | decode_hexdigit [i] = |
|
|
1620 | i >= '0' && i <= '9' ? i - '0' |
|
|
1621 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
|
|
1622 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
|
|
1623 | : -1; |
789 | |
1624 | |
790 | for (i = 6; --i; ) |
|
|
791 | { |
|
|
792 | decode_hexdigit ['a' + i] = 10 + i; |
|
|
793 | decode_hexdigit ['A' + i] = 10 + i; |
|
|
794 | } |
|
|
795 | |
|
|
796 | json_stash = gv_stashpv ("JSON::XS", 1); |
1625 | json_stash = gv_stashpv ("JSON::XS" , 1); |
797 | } |
1626 | json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); |
798 | |
1627 | |
799 | SV *new (char *dummy) |
1628 | json_true = get_bool ("JSON::XS::true"); |
|
|
1629 | json_false = get_bool ("JSON::XS::false"); |
|
|
1630 | } |
|
|
1631 | |
|
|
1632 | PROTOTYPES: DISABLE |
|
|
1633 | |
|
|
1634 | void CLONE (...) |
800 | CODE: |
1635 | CODE: |
801 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
1636 | json_stash = 0; |
|
|
1637 | json_boolean_stash = 0; |
|
|
1638 | |
|
|
1639 | void new (char *klass) |
|
|
1640 | PPCODE: |
|
|
1641 | { |
|
|
1642 | SV *pv = NEWSV (0, sizeof (JSON)); |
|
|
1643 | SvPOK_only (pv); |
|
|
1644 | Zero (SvPVX (pv), 1, JSON); |
|
|
1645 | ((JSON *)SvPVX (pv))->flags = F_DEFAULT; |
|
|
1646 | XPUSHs (sv_2mortal (sv_bless ( |
|
|
1647 | newRV_noinc (pv), |
|
|
1648 | strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) |
|
|
1649 | ))); |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | void ascii (JSON *self, int enable = 1) |
|
|
1653 | ALIAS: |
|
|
1654 | ascii = F_ASCII |
|
|
1655 | latin1 = F_LATIN1 |
|
|
1656 | utf8 = F_UTF8 |
|
|
1657 | indent = F_INDENT |
|
|
1658 | canonical = F_CANONICAL |
|
|
1659 | space_before = F_SPACE_BEFORE |
|
|
1660 | space_after = F_SPACE_AFTER |
|
|
1661 | pretty = F_PRETTY |
|
|
1662 | allow_nonref = F_ALLOW_NONREF |
|
|
1663 | shrink = F_SHRINK |
|
|
1664 | allow_blessed = F_ALLOW_BLESSED |
|
|
1665 | convert_blessed = F_CONV_BLESSED |
|
|
1666 | relaxed = F_RELAXED |
|
|
1667 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1668 | PPCODE: |
|
|
1669 | { |
|
|
1670 | if (enable) |
|
|
1671 | self->flags |= ix; |
|
|
1672 | else |
|
|
1673 | self->flags &= ~ix; |
|
|
1674 | |
|
|
1675 | XPUSHs (ST (0)); |
|
|
1676 | } |
|
|
1677 | |
|
|
1678 | void get_ascii (JSON *self) |
|
|
1679 | ALIAS: |
|
|
1680 | get_ascii = F_ASCII |
|
|
1681 | get_latin1 = F_LATIN1 |
|
|
1682 | get_utf8 = F_UTF8 |
|
|
1683 | get_indent = F_INDENT |
|
|
1684 | get_canonical = F_CANONICAL |
|
|
1685 | get_space_before = F_SPACE_BEFORE |
|
|
1686 | get_space_after = F_SPACE_AFTER |
|
|
1687 | get_allow_nonref = F_ALLOW_NONREF |
|
|
1688 | get_shrink = F_SHRINK |
|
|
1689 | get_allow_blessed = F_ALLOW_BLESSED |
|
|
1690 | get_convert_blessed = F_CONV_BLESSED |
|
|
1691 | get_relaxed = F_RELAXED |
|
|
1692 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1693 | PPCODE: |
|
|
1694 | XPUSHs (boolSV (self->flags & ix)); |
|
|
1695 | |
|
|
1696 | void max_depth (JSON *self, UV max_depth = 0x80000000UL) |
|
|
1697 | PPCODE: |
|
|
1698 | { |
|
|
1699 | UV log2 = 0; |
|
|
1700 | |
|
|
1701 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
|
|
1702 | |
|
|
1703 | while ((1UL << log2) < max_depth) |
|
|
1704 | ++log2; |
|
|
1705 | |
|
|
1706 | self->flags = self->flags & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1707 | |
|
|
1708 | XPUSHs (ST (0)); |
|
|
1709 | } |
|
|
1710 | |
|
|
1711 | U32 get_max_depth (JSON *self) |
|
|
1712 | CODE: |
|
|
1713 | RETVAL = DEC_DEPTH (self->flags); |
802 | OUTPUT: |
1714 | OUTPUT: |
803 | RETVAL |
1715 | RETVAL |
804 | |
1716 | |
805 | SV *ascii (SV *self, int enable) |
1717 | void max_size (JSON *self, UV max_size = 0) |
806 | ALIAS: |
1718 | PPCODE: |
807 | ascii = F_ASCII |
1719 | { |
808 | utf8 = F_UTF8 |
1720 | UV log2 = 0; |
809 | indent = F_INDENT |
1721 | |
810 | canonical = F_CANONICAL |
1722 | if (max_size > 0x80000000UL) max_size = 0x80000000UL; |
811 | space_before = F_SPACE_BEFORE |
1723 | if (max_size == 1) max_size = 2; |
812 | space_after = F_SPACE_AFTER |
1724 | |
813 | json_rpc = F_JSON_RPC |
1725 | while ((1UL << log2) < max_size) |
|
|
1726 | ++log2; |
|
|
1727 | |
|
|
1728 | self->flags = self->flags & ~F_MAXSIZE | (log2 << S_MAXSIZE); |
|
|
1729 | |
|
|
1730 | XPUSHs (ST (0)); |
|
|
1731 | } |
|
|
1732 | |
|
|
1733 | int get_max_size (JSON *self) |
814 | CODE: |
1734 | CODE: |
815 | { |
1735 | RETVAL = DEC_SIZE (self->flags); |
816 | UV *uv = SvJSON (self); |
|
|
817 | if (enable) |
|
|
818 | *uv |= ix; |
|
|
819 | else |
|
|
820 | *uv &= ~ix; |
|
|
821 | |
|
|
822 | RETVAL = newSVsv (self); |
|
|
823 | } |
|
|
824 | OUTPUT: |
1736 | OUTPUT: |
825 | RETVAL |
1737 | RETVAL |
826 | |
1738 | |
827 | void encode (SV *self, SV *scalar) |
1739 | void filter_json_object (JSON *self, SV *cb = &PL_sv_undef) |
828 | PPCODE: |
1740 | PPCODE: |
829 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
1741 | { |
|
|
1742 | SvREFCNT_dec (self->cb_object); |
|
|
1743 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
830 | |
1744 | |
831 | void decode (SV *self, SV *jsondata) |
1745 | XPUSHs (ST (0)); |
|
|
1746 | } |
|
|
1747 | |
|
|
1748 | void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) |
832 | PPCODE: |
1749 | PPCODE: |
|
|
1750 | { |
|
|
1751 | if (!self->cb_sk_object) |
|
|
1752 | self->cb_sk_object = newHV (); |
|
|
1753 | |
|
|
1754 | if (SvOK (cb)) |
|
|
1755 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1756 | else |
|
|
1757 | { |
|
|
1758 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1759 | |
|
|
1760 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1761 | { |
|
|
1762 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1763 | self->cb_sk_object = 0; |
|
|
1764 | } |
|
|
1765 | } |
|
|
1766 | |
|
|
1767 | XPUSHs (ST (0)); |
|
|
1768 | } |
|
|
1769 | |
|
|
1770 | void encode (JSON *self, SV *scalar) |
|
|
1771 | PPCODE: |
|
|
1772 | XPUSHs (encode_json (scalar, self)); |
|
|
1773 | |
|
|
1774 | void decode (JSON *self, SV *jsonstr) |
|
|
1775 | PPCODE: |
833 | XPUSHs (decode_json (jsondata, *SvJSON (self))); |
1776 | XPUSHs (decode_json (jsonstr, self, 0)); |
834 | |
1777 | |
|
|
1778 | void decode_prefix (JSON *self, SV *jsonstr) |
|
|
1779 | PPCODE: |
|
|
1780 | { |
|
|
1781 | STRLEN offset; |
|
|
1782 | EXTEND (SP, 2); |
|
|
1783 | PUSHs (decode_json (jsonstr, self, &offset)); |
|
|
1784 | PUSHs (sv_2mortal (newSVuv (offset))); |
|
|
1785 | } |
|
|
1786 | |
|
|
1787 | void incr_parse (JSON *self, SV *jsonstr = 0) |
|
|
1788 | PPCODE: |
|
|
1789 | { |
|
|
1790 | if (!self->incr_text) |
|
|
1791 | self->incr_text = newSVpvn ("", 0); |
|
|
1792 | |
|
|
1793 | // append data, if any |
|
|
1794 | if (jsonstr) |
|
|
1795 | { |
|
|
1796 | if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text)) |
|
|
1797 | { |
|
|
1798 | /* utf-8-ness differs, need to upgrade */ |
|
|
1799 | sv_utf8_upgrade (self->incr_text); |
|
|
1800 | |
|
|
1801 | if (self->incr_pos) |
|
|
1802 | self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos) |
|
|
1803 | - (U8 *)SvPVX (self->incr_text); |
|
|
1804 | } |
|
|
1805 | |
|
|
1806 | { |
|
|
1807 | STRLEN len; |
|
|
1808 | const char *str = SvPV (jsonstr, len); |
|
|
1809 | SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1); |
|
|
1810 | Move (str, SvEND (self->incr_text), len, char); |
|
|
1811 | SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); |
|
|
1812 | *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there |
|
|
1813 | } |
|
|
1814 | } |
|
|
1815 | |
|
|
1816 | if (GIMME_V != G_VOID) |
|
|
1817 | do |
|
|
1818 | { |
|
|
1819 | STRLEN offset; |
|
|
1820 | |
|
|
1821 | if (!INCR_DONE (self)) |
|
|
1822 | { |
|
|
1823 | incr_parse (self); |
|
|
1824 | if (!INCR_DONE (self)) |
|
|
1825 | break; |
|
|
1826 | } |
|
|
1827 | |
|
|
1828 | XPUSHs (decode_json (self->incr_text, self, &offset)); |
|
|
1829 | |
|
|
1830 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset); |
|
|
1831 | self->incr_pos -= offset; |
|
|
1832 | self->incr_nest = 0; |
|
|
1833 | self->incr_mode = 0; |
|
|
1834 | } |
|
|
1835 | while (GIMME_V == G_ARRAY); |
|
|
1836 | } |
|
|
1837 | |
|
|
1838 | SV *incr_text (JSON *self) |
|
|
1839 | ATTRS: lvalue |
|
|
1840 | CODE: |
|
|
1841 | { |
|
|
1842 | if (self->incr_pos) |
|
|
1843 | croak ("incr_text can not be called when the incremental parser already started parsing"); |
|
|
1844 | |
|
|
1845 | RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef; |
|
|
1846 | } |
|
|
1847 | OUTPUT: |
|
|
1848 | RETVAL |
|
|
1849 | |
|
|
1850 | void incr_skip (JSON *self) |
|
|
1851 | CODE: |
|
|
1852 | { |
|
|
1853 | if (self->incr_pos) |
|
|
1854 | { |
|
|
1855 | sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos); |
|
|
1856 | self->incr_pos = 0; |
|
|
1857 | self->incr_nest = 0; |
|
|
1858 | self->incr_mode = 0; |
|
|
1859 | } |
|
|
1860 | } |
|
|
1861 | |
|
|
1862 | void DESTROY (JSON *self) |
|
|
1863 | CODE: |
|
|
1864 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1865 | SvREFCNT_dec (self->cb_object); |
|
|
1866 | SvREFCNT_dec (self->incr_text); |
|
|
1867 | |
|
|
1868 | PROTOTYPES: ENABLE |
|
|
1869 | |
|
|
1870 | void encode_json (SV *scalar) |
|
|
1871 | ALIAS: |
|
|
1872 | to_json_ = 0 |
|
|
1873 | encode_json = F_UTF8 |
|
|
1874 | PPCODE: |
|
|
1875 | { |
|
|
1876 | JSON json = { F_DEFAULT | ix }; |
|
|
1877 | XPUSHs (encode_json (scalar, &json)); |
|
|
1878 | } |
|
|
1879 | |
|
|
1880 | void decode_json (SV *jsonstr) |
|
|
1881 | ALIAS: |
|
|
1882 | from_json_ = 0 |
|
|
1883 | decode_json = F_UTF8 |
|
|
1884 | PPCODE: |
|
|
1885 | { |
|
|
1886 | JSON json = { F_DEFAULT | ix }; |
|
|
1887 | XPUSHs (decode_json (jsonstr, &json, 0)); |
|
|
1888 | } |
|
|
1889 | |
|
|
1890 | |