… | |
… | |
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" |
8 | |
9 | |
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10 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
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11 | # define snprintf _snprintf // C compilers have this in stdio.h |
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12 | #endif |
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13 | |
9 | #define F_ASCII 0x00000001 |
14 | #define F_ASCII 0x00000001UL |
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15 | #define F_LATIN1 0x00000002UL |
10 | #define F_UTF8 0x00000002 |
16 | #define F_UTF8 0x00000004UL |
11 | #define F_INDENT 0x00000004 |
17 | #define F_INDENT 0x00000008UL |
12 | #define F_CANONICAL 0x00000008 |
18 | #define F_CANONICAL 0x00000010UL |
13 | #define F_SPACE_BEFORE 0x00000010 |
19 | #define F_SPACE_BEFORE 0x00000020UL |
14 | #define F_SPACE_AFTER 0x00000020 |
20 | #define F_SPACE_AFTER 0x00000040UL |
15 | #define F_JSON_RPC 0x00000040 |
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16 | #define F_ALLOW_NONREF 0x00000080 |
21 | #define F_ALLOW_NONREF 0x00000100UL |
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22 | #define F_SHRINK 0x00000200UL |
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23 | #define F_MAXDEPTH 0xf8000000UL |
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24 | #define S_MAXDEPTH 27 |
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25 | |
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26 | #define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) |
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27 | |
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28 | // F_SELFCONVERT? <=> to_json/toJson |
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29 | // F_BLESSED? <=> { $__class__$ => } |
17 | |
30 | |
18 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
31 | #define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
19 | #define F_DEFAULT 0 |
32 | #define F_DEFAULT (9UL << S_MAXDEPTH) |
20 | |
33 | |
21 | #define INIT_SIZE 32 // initial scalar size to be allocated |
34 | #define INIT_SIZE 32 // initial scalar size to be allocated |
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35 | #define INDENT_STEP 3 // spaces per indentation level |
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36 | |
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37 | #define SHORT_STRING_LEN 512 // special-case strings of up to this size |
22 | |
38 | |
23 | #define SB do { |
39 | #define SB do { |
24 | #define SE } while (0) |
40 | #define SE } while (0) |
25 | |
41 | |
26 | static HV *json_stash; |
42 | static HV *json_stash; // JSON::XS:: |
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43 | |
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44 | ///////////////////////////////////////////////////////////////////////////// |
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45 | // utility functions |
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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 | static void |
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57 | shrink (SV *sv) |
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58 | { |
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59 | sv_utf8_downgrade (sv, 1); |
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60 | if (SvLEN (sv) > SvCUR (sv) + 1) |
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61 | { |
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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 | #elif defined (SvPV_renew) |
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65 | SvPV_renew (sv, SvCUR (sv) + 1); |
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66 | #endif |
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67 | } |
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68 | } |
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69 | |
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70 | // decode an utf-8 character and return it, or (UV)-1 in |
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71 | // case of an error. |
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72 | // we special-case "safe" characters from U+80 .. U+7FF, |
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73 | // but use the very good perl function to parse anything else. |
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74 | // note that we never call this function for a ascii codepoints |
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75 | static UV |
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76 | decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) |
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77 | { |
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78 | if (s[0] > 0xdf || s[0] < 0xc2) |
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79 | return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); |
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80 | else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) |
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81 | { |
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82 | *clen = 2; |
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83 | return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f); |
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84 | } |
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85 | else |
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86 | { |
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87 | *clen = (STRLEN)-1; |
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88 | return (UV)-1; |
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89 | } |
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90 | } |
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91 | |
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92 | ///////////////////////////////////////////////////////////////////////////// |
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93 | // encoder |
27 | |
94 | |
28 | // structure used for encoding JSON |
95 | // structure used for encoding JSON |
29 | typedef struct |
96 | typedef struct |
30 | { |
97 | { |
31 | char *cur; |
98 | char *cur; // SvPVX (sv) + current output position |
32 | STRLEN len; // SvLEN (sv) |
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33 | char *end; // SvEND (sv) |
99 | char *end; // SvEND (sv) |
34 | SV *sv; |
100 | SV *sv; // result scalar |
35 | UV flags; |
101 | U32 flags; // F_* |
36 | int max_recurse; |
102 | U32 indent; // indentation level |
37 | int indent; |
103 | U32 maxdepth; // max. indentation/recursion level |
38 | } enc_t; |
104 | } enc_t; |
39 | |
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40 | // structure used for decoding JSON |
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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 | 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 | ///////////////////////////////////////////////////////////////////////////// |
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59 | |
105 | |
60 | static void |
106 | static void |
61 | need (enc_t *enc, STRLEN len) |
107 | need (enc_t *enc, STRLEN len) |
62 | { |
108 | { |
63 | if (enc->cur + len >= enc->end) |
109 | if (enc->cur + len >= enc->end) |
64 | { |
110 | { |
65 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
111 | STRLEN cur = enc->cur - SvPVX (enc->sv); |
66 | SvGROW (enc->sv, cur + len + 1); |
112 | SvGROW (enc->sv, cur + len + 1); |
67 | enc->cur = SvPVX (enc->sv) + cur; |
113 | enc->cur = SvPVX (enc->sv) + cur; |
68 | enc->end = SvEND (enc->sv); |
114 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
69 | } |
115 | } |
70 | } |
116 | } |
71 | |
117 | |
72 | static void |
118 | static void |
73 | encode_ch (enc_t *enc, char ch) |
119 | encode_ch (enc_t *enc, char ch) |
… | |
… | |
79 | static void |
125 | static void |
80 | encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
126 | encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
81 | { |
127 | { |
82 | char *end = str + len; |
128 | char *end = str + len; |
83 | |
129 | |
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130 | need (enc, len); |
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131 | |
84 | while (str < end) |
132 | while (str < end) |
85 | { |
133 | { |
86 | unsigned char ch = *(unsigned char *)str; |
134 | unsigned char ch = *(unsigned char *)str; |
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135 | |
87 | if (ch >= 0x20 && ch < 0x80) // most common case |
136 | if (ch >= 0x20 && ch < 0x80) // most common case |
88 | { |
137 | { |
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138 | if (ch == '"') // but with slow exceptions |
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139 | { |
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140 | need (enc, len += 1); |
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141 | *enc->cur++ = '\\'; |
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142 | *enc->cur++ = '"'; |
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143 | } |
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144 | else if (ch == '\\') |
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145 | { |
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146 | need (enc, len += 1); |
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147 | *enc->cur++ = '\\'; |
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148 | *enc->cur++ = '\\'; |
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149 | } |
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150 | else |
89 | *enc->cur++ = ch; |
151 | *enc->cur++ = ch; |
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152 | |
90 | str++; |
153 | ++str; |
91 | } |
154 | } |
92 | else |
155 | else |
93 | { |
156 | { |
94 | STRLEN clen; |
157 | switch (ch) |
95 | UV uch; |
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96 | |
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97 | if (is_utf8) |
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98 | { |
158 | { |
99 | uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
159 | case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
100 | if (clen < 0) |
160 | case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
101 | croak ("malformed UTF-8 character in string, cannot convert to JSON"); |
161 | case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
102 | } |
162 | case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
103 | else |
163 | case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
104 | { |
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105 | uch = ch; |
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106 | clen = 1; |
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107 | } |
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108 | |
164 | |
109 | need (enc, len += 6); |
165 | default: |
110 | |
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111 | if (uch < 0xa0 || enc->flags & F_ASCII) |
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112 | { |
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113 | if (uch > 0xFFFFUL) |
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114 | { |
166 | { |
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167 | STRLEN clen; |
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168 | UV uch; |
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169 | |
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170 | if (is_utf8) |
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171 | { |
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172 | //uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
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173 | uch = decode_utf8 (str, end - str, &clen); |
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174 | if (clen == (STRLEN)-1) |
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175 | croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
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176 | } |
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177 | else |
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178 | { |
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179 | uch = ch; |
115 | len += 6; |
180 | clen = 1; |
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181 | } |
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182 | |
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183 | if (uch > 0x10FFFFUL) |
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184 | croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
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185 | |
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186 | if (uch < 0x80 || enc->flags & F_ASCII || (enc->flags & F_LATIN1 && uch > 0xFF)) |
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187 | { |
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188 | if (uch > 0xFFFFUL) |
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189 | { |
116 | need (enc, len += 6); |
190 | need (enc, len += 11); |
117 | sprintf (enc->cur, "\\u%04x\\u%04x", |
191 | sprintf (enc->cur, "\\u%04x\\u%04x", |
118 | (uch - 0x10000) / 0x400 + 0xD800, |
192 | (int)((uch - 0x10000) / 0x400 + 0xD800), |
119 | (uch - 0x10000) % 0x400 + 0xDC00); |
193 | (int)((uch - 0x10000) % 0x400 + 0xDC00)); |
120 | enc->cur += 12; |
194 | enc->cur += 12; |
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195 | } |
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196 | else |
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197 | { |
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198 | static char hexdigit [16] = "0123456789abcdef"; |
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199 | need (enc, len += 5); |
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200 | *enc->cur++ = '\\'; |
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201 | *enc->cur++ = 'u'; |
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202 | *enc->cur++ = hexdigit [ uch >> 12 ]; |
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203 | *enc->cur++ = hexdigit [(uch >> 8) & 15]; |
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204 | *enc->cur++ = hexdigit [(uch >> 4) & 15]; |
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205 | *enc->cur++ = hexdigit [(uch >> 0) & 15]; |
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206 | } |
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207 | |
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208 | str += clen; |
121 | } |
209 | } |
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210 | else if (enc->flags & F_LATIN1) |
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211 | { |
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212 | *enc->cur++ = uch; |
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213 | str += clen; |
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214 | } |
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215 | else if (is_utf8) |
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216 | { |
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217 | need (enc, len += clen); |
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218 | do |
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219 | { |
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220 | *enc->cur++ = *str++; |
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221 | } |
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222 | while (--clen); |
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223 | } |
122 | else |
224 | else |
123 | { |
225 | { |
124 | sprintf (enc->cur, "\\u%04x", uch); |
226 | need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed |
125 | enc->cur += 6; |
227 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
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228 | ++str; |
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229 | } |
126 | } |
230 | } |
127 | } |
231 | } |
128 | else if (is_utf8) |
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129 | { |
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130 | memcpy (enc->cur, str, clen); |
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131 | enc->cur += clen; |
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132 | } |
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133 | else |
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134 | enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
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135 | |
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136 | str += clen; |
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137 | } |
232 | } |
138 | |
233 | |
139 | --len; |
234 | --len; |
140 | } |
235 | } |
141 | } |
236 | } |
142 | |
237 | |
143 | #define INDENT SB \ |
238 | static void |
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239 | encode_indent (enc_t *enc) |
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240 | { |
144 | if (enc->flags & F_INDENT) \ |
241 | if (enc->flags & F_INDENT) |
145 | { \ |
242 | { |
146 | int i_; \ |
243 | int spaces = enc->indent * INDENT_STEP; |
147 | need (enc, enc->indent); \ |
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148 | for (i_ = enc->indent * 3; i_--; )\ |
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149 | encode_ch (enc, ' '); \ |
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150 | } \ |
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151 | SE |
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152 | |
244 | |
153 | #define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE |
245 | need (enc, spaces); |
154 | #define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE |
246 | memset (enc->cur, ' ', spaces); |
155 | #define COMMA SB \ |
247 | enc->cur += spaces; |
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248 | } |
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249 | } |
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250 | |
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251 | static void |
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252 | encode_space (enc_t *enc) |
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253 | { |
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254 | need (enc, 1); |
156 | encode_ch (enc, ','); \ |
255 | encode_ch (enc, ' '); |
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256 | } |
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257 | |
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258 | static void |
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259 | encode_nl (enc_t *enc) |
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260 | { |
157 | if (enc->flags & F_INDENT) \ |
261 | if (enc->flags & F_INDENT) |
158 | NL; \ |
262 | { |
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263 | need (enc, 1); |
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264 | encode_ch (enc, '\n'); |
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265 | } |
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266 | } |
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267 | |
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268 | static void |
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269 | encode_comma (enc_t *enc) |
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270 | { |
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271 | encode_ch (enc, ','); |
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272 | |
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273 | if (enc->flags & F_INDENT) |
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274 | encode_nl (enc); |
159 | else if (enc->flags & F_SPACE_AFTER) \ |
275 | else if (enc->flags & F_SPACE_AFTER) |
160 | SPACE; \ |
276 | encode_space (enc); |
161 | SE |
277 | } |
162 | |
278 | |
163 | static void encode_sv (enc_t *enc, SV *sv); |
279 | static void encode_sv (enc_t *enc, SV *sv); |
164 | |
280 | |
165 | static void |
281 | static void |
166 | encode_av (enc_t *enc, AV *av) |
282 | encode_av (enc_t *enc, AV *av) |
167 | { |
283 | { |
168 | int i, len = av_len (av); |
284 | int i, len = av_len (av); |
169 | |
285 | |
170 | encode_ch (enc, '['); NL; |
286 | if (enc->indent >= enc->maxdepth) |
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287 | croak ("data structure too deep (hit recursion limit)"); |
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288 | |
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289 | encode_ch (enc, '['); encode_nl (enc); |
171 | ++enc->indent; |
290 | ++enc->indent; |
172 | |
291 | |
173 | for (i = 0; i <= len; ++i) |
292 | for (i = 0; i <= len; ++i) |
174 | { |
293 | { |
175 | INDENT; |
294 | encode_indent (enc); |
176 | encode_sv (enc, *av_fetch (av, i, 0)); |
295 | encode_sv (enc, *av_fetch (av, i, 0)); |
177 | |
296 | |
178 | if (i < len) |
297 | if (i < len) |
179 | COMMA; |
298 | encode_comma (enc); |
180 | } |
299 | } |
181 | |
300 | |
182 | NL; |
301 | encode_nl (enc); |
183 | |
302 | |
184 | --enc->indent; |
303 | --enc->indent; |
185 | INDENT; encode_ch (enc, ']'); |
304 | encode_indent (enc); encode_ch (enc, ']'); |
186 | } |
305 | } |
187 | |
306 | |
188 | static void |
307 | static void |
189 | encode_he (enc_t *enc, HE *he) |
308 | encode_he (enc_t *enc, HE *he) |
190 | { |
309 | { |
… | |
… | |
192 | |
311 | |
193 | if (HeKLEN (he) == HEf_SVKEY) |
312 | if (HeKLEN (he) == HEf_SVKEY) |
194 | { |
313 | { |
195 | SV *sv = HeSVKEY (he); |
314 | SV *sv = HeSVKEY (he); |
196 | STRLEN len; |
315 | STRLEN len; |
|
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316 | char *str; |
|
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317 | |
|
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318 | SvGETMAGIC (sv); |
197 | char *str = SvPV (sv, len); |
319 | str = SvPV (sv, len); |
198 | |
320 | |
199 | encode_str (enc, str, len, SvUTF8 (sv)); |
321 | encode_str (enc, str, len, SvUTF8 (sv)); |
200 | } |
322 | } |
201 | else |
323 | else |
202 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
324 | encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
203 | |
325 | |
204 | encode_ch (enc, '"'); |
326 | encode_ch (enc, '"'); |
205 | |
327 | |
206 | if (enc->flags & F_SPACE_BEFORE) SPACE; |
328 | if (enc->flags & F_SPACE_BEFORE) encode_space (enc); |
207 | encode_ch (enc, ':'); |
329 | encode_ch (enc, ':'); |
208 | if (enc->flags & F_SPACE_AFTER ) SPACE; |
330 | if (enc->flags & F_SPACE_AFTER ) encode_space (enc); |
209 | encode_sv (enc, HeVAL (he)); |
331 | encode_sv (enc, HeVAL (he)); |
210 | } |
332 | } |
211 | |
333 | |
212 | // compare hash entries, used when all keys are bytestrings |
334 | // compare hash entries, used when all keys are bytestrings |
213 | static int |
335 | static int |
… | |
… | |
219 | HE *b = *(HE **)b_; |
341 | HE *b = *(HE **)b_; |
220 | |
342 | |
221 | STRLEN la = HeKLEN (a); |
343 | STRLEN la = HeKLEN (a); |
222 | STRLEN lb = HeKLEN (b); |
344 | STRLEN lb = HeKLEN (b); |
223 | |
345 | |
224 | if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
346 | if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
225 | cmp = la < lb ? -1 : la == lb ? 0 : 1; |
347 | cmp = la - lb; |
226 | |
348 | |
227 | return cmp; |
349 | return cmp; |
228 | } |
350 | } |
229 | |
351 | |
230 | // compare hash entries, used when some keys are sv's or utf-x |
352 | // compare hash entries, used when some keys are sv's or utf-x |
… | |
… | |
237 | static void |
359 | static void |
238 | encode_hv (enc_t *enc, HV *hv) |
360 | encode_hv (enc_t *enc, HV *hv) |
239 | { |
361 | { |
240 | int count, i; |
362 | int count, i; |
241 | |
363 | |
|
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364 | if (enc->indent >= enc->maxdepth) |
|
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365 | croak ("data structure too deep (hit recursion limit)"); |
|
|
366 | |
242 | encode_ch (enc, '{'); NL; ++enc->indent; |
367 | encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
243 | |
368 | |
244 | if ((count = hv_iterinit (hv))) |
369 | if ((count = hv_iterinit (hv))) |
245 | { |
370 | { |
246 | // for canonical output we have to sort by keys first |
371 | // for canonical output we have to sort by keys first |
247 | // actually, this is mostly due to the stupid so-called |
372 | // actually, this is mostly due to the stupid so-called |
248 | // security workaround added somewhere in 5.8.x. |
373 | // security workaround added somewhere in 5.8.x. |
249 | // that randomises hash orderings |
374 | // that randomises hash orderings |
250 | if (enc->flags & F_CANONICAL) |
375 | if (enc->flags & F_CANONICAL) |
251 | { |
376 | { |
252 | HE *he, *hes [count]; |
|
|
253 | int fast = 1; |
377 | int fast = 1; |
|
|
378 | HE *he; |
|
|
379 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
|
|
380 | HE **hes = _alloca (count * sizeof (HE)); |
|
|
381 | #else |
|
|
382 | HE *hes [count]; // if your compiler dies here, you need to enable C99 mode |
|
|
383 | #endif |
254 | |
384 | |
255 | i = 0; |
385 | i = 0; |
256 | while ((he = hv_iternext (hv))) |
386 | while ((he = hv_iternext (hv))) |
257 | { |
387 | { |
258 | hes [i++] = he; |
388 | hes [i++] = he; |
… | |
… | |
264 | |
394 | |
265 | if (fast) |
395 | if (fast) |
266 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
396 | qsort (hes, count, sizeof (HE *), he_cmp_fast); |
267 | else |
397 | else |
268 | { |
398 | { |
269 | // hack to disable "use bytes" |
399 | // hack to forcefully disable "use bytes" |
270 | COP *oldcop = PL_curcop, cop; |
400 | COP cop = *PL_curcop; |
271 | cop.op_private = 0; |
401 | cop.op_private = 0; |
|
|
402 | |
|
|
403 | ENTER; |
|
|
404 | SAVETMPS; |
|
|
405 | |
|
|
406 | SAVEVPTR (PL_curcop); |
272 | PL_curcop = &cop; |
407 | PL_curcop = &cop; |
273 | |
408 | |
274 | SAVETMPS; |
|
|
275 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
409 | qsort (hes, count, sizeof (HE *), he_cmp_slow); |
|
|
410 | |
276 | FREETMPS; |
411 | FREETMPS; |
277 | |
412 | LEAVE; |
278 | PL_curcop = oldcop; |
|
|
279 | } |
413 | } |
280 | |
414 | |
281 | for (i = 0; i < count; ++i) |
415 | for (i = 0; i < count; ++i) |
282 | { |
416 | { |
283 | INDENT; |
417 | encode_indent (enc); |
284 | encode_he (enc, hes [i]); |
418 | encode_he (enc, hes [i]); |
285 | |
419 | |
286 | if (i < count - 1) |
420 | if (i < count - 1) |
287 | COMMA; |
421 | encode_comma (enc); |
288 | } |
422 | } |
289 | |
423 | |
290 | NL; |
424 | encode_nl (enc); |
291 | } |
425 | } |
292 | else |
426 | else |
293 | { |
427 | { |
294 | SV *sv; |
|
|
295 | HE *he = hv_iternext (hv); |
428 | HE *he = hv_iternext (hv); |
296 | |
429 | |
297 | for (;;) |
430 | for (;;) |
298 | { |
431 | { |
299 | INDENT; |
432 | encode_indent (enc); |
300 | encode_he (enc, he); |
433 | encode_he (enc, he); |
301 | |
434 | |
302 | if (!(he = hv_iternext (hv))) |
435 | if (!(he = hv_iternext (hv))) |
303 | break; |
436 | break; |
304 | |
437 | |
305 | COMMA; |
438 | encode_comma (enc); |
306 | } |
439 | } |
307 | |
440 | |
308 | NL; |
441 | encode_nl (enc); |
309 | } |
442 | } |
310 | } |
443 | } |
311 | |
444 | |
312 | --enc->indent; INDENT; encode_ch (enc, '}'); |
445 | --enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
|
|
446 | } |
|
|
447 | |
|
|
448 | // encode objects, arrays and special \0=false and \1=true values. |
|
|
449 | static void |
|
|
450 | encode_rv (enc_t *enc, SV *sv) |
|
|
451 | { |
|
|
452 | svtype svt; |
|
|
453 | |
|
|
454 | SvGETMAGIC (sv); |
|
|
455 | svt = SvTYPE (sv); |
|
|
456 | |
|
|
457 | if (svt == SVt_PVHV) |
|
|
458 | encode_hv (enc, (HV *)sv); |
|
|
459 | else if (svt == SVt_PVAV) |
|
|
460 | encode_av (enc, (AV *)sv); |
|
|
461 | else if (svt < SVt_PVAV) |
|
|
462 | { |
|
|
463 | if (SvNIOK (sv) && SvIV (sv) == 0) |
|
|
464 | encode_str (enc, "false", 5, 0); |
|
|
465 | else if (SvNIOK (sv) && SvIV (sv) == 1) |
|
|
466 | encode_str (enc, "true", 4, 0); |
|
|
467 | else |
|
|
468 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
469 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
470 | } |
|
|
471 | else |
|
|
472 | croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
|
|
473 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
313 | } |
474 | } |
314 | |
475 | |
315 | static void |
476 | static void |
316 | encode_sv (enc_t *enc, SV *sv) |
477 | encode_sv (enc_t *enc, SV *sv) |
317 | { |
478 | { |
|
|
479 | SvGETMAGIC (sv); |
|
|
480 | |
318 | if (SvPOKp (sv)) |
481 | if (SvPOKp (sv)) |
319 | { |
482 | { |
320 | STRLEN len; |
483 | STRLEN len; |
321 | char *str = SvPV (sv, len); |
484 | char *str = SvPV (sv, len); |
322 | encode_ch (enc, '"'); |
485 | encode_ch (enc, '"'); |
… | |
… | |
336 | SvIsUV(sv) |
499 | SvIsUV(sv) |
337 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
500 | ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
338 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
501 | : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
339 | } |
502 | } |
340 | else if (SvROK (sv)) |
503 | else if (SvROK (sv)) |
341 | { |
504 | encode_rv (enc, SvRV (sv)); |
342 | if (!--enc->max_recurse) |
|
|
343 | croak ("data structure too deep (hit recursion limit)"); |
|
|
344 | |
|
|
345 | sv = SvRV (sv); |
|
|
346 | |
|
|
347 | switch (SvTYPE (sv)) |
|
|
348 | { |
|
|
349 | case SVt_PVAV: encode_av (enc, (AV *)sv); break; |
|
|
350 | case SVt_PVHV: encode_hv (enc, (HV *)sv); break; |
|
|
351 | |
|
|
352 | default: |
|
|
353 | croak ("JSON can only represent references to arrays or hashes"); |
|
|
354 | } |
|
|
355 | } |
|
|
356 | else if (!SvOK (sv)) |
505 | else if (!SvOK (sv)) |
357 | encode_str (enc, "null", 4, 0); |
506 | encode_str (enc, "null", 4, 0); |
358 | else |
507 | else |
359 | croak ("encountered perl type that JSON cannot handle"); |
508 | croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
|
|
509 | SvPV_nolen (sv), SvFLAGS (sv)); |
360 | } |
510 | } |
361 | |
511 | |
362 | static SV * |
512 | static SV * |
363 | encode_json (SV *scalar, UV flags) |
513 | encode_json (SV *scalar, U32 flags) |
364 | { |
514 | { |
|
|
515 | enc_t enc; |
|
|
516 | |
365 | if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
517 | if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
366 | croak ("hash- or arraref required (not a simple scalar, use allow_nonref to allow this)"); |
518 | croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
367 | |
519 | |
368 | enc_t enc; |
|
|
369 | enc.flags = flags; |
520 | enc.flags = flags; |
370 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
521 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
371 | enc.cur = SvPVX (enc.sv); |
522 | enc.cur = SvPVX (enc.sv); |
372 | enc.end = SvEND (enc.sv); |
523 | enc.end = SvEND (enc.sv); |
373 | enc.max_recurse = 0; |
|
|
374 | enc.indent = 0; |
524 | enc.indent = 0; |
|
|
525 | enc.maxdepth = DEC_DEPTH (flags); |
375 | |
526 | |
376 | SvPOK_only (enc.sv); |
527 | SvPOK_only (enc.sv); |
377 | encode_sv (&enc, scalar); |
528 | encode_sv (&enc, scalar); |
378 | |
529 | |
|
|
530 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
|
|
531 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
|
|
532 | |
379 | if (!(flags & (F_ASCII | F_UTF8))) |
533 | if (!(flags & (F_ASCII | F_LATIN1 | F_UTF8))) |
380 | SvUTF8_on (enc.sv); |
534 | SvUTF8_on (enc.sv); |
381 | |
535 | |
382 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
536 | if (enc.flags & F_SHRINK) |
|
|
537 | shrink (enc.sv); |
|
|
538 | |
383 | return enc.sv; |
539 | return enc.sv; |
384 | } |
540 | } |
385 | |
541 | |
386 | ///////////////////////////////////////////////////////////////////////////// |
542 | ///////////////////////////////////////////////////////////////////////////// |
|
|
543 | // decoder |
387 | |
544 | |
388 | #define WS \ |
545 | // structure used for decoding JSON |
|
|
546 | typedef struct |
|
|
547 | { |
|
|
548 | char *cur; // current parser pointer |
|
|
549 | char *end; // end of input string |
|
|
550 | const char *err; // parse error, if != 0 |
|
|
551 | U32 flags; // F_* |
|
|
552 | U32 depth; // recursion depth |
|
|
553 | U32 maxdepth; // recursion depth limit |
|
|
554 | } dec_t; |
|
|
555 | |
|
|
556 | static void |
|
|
557 | decode_ws (dec_t *dec) |
|
|
558 | { |
389 | for (;;) \ |
559 | for (;;) |
390 | { \ |
560 | { |
391 | char ch = *dec->cur; \ |
561 | char ch = *dec->cur; |
|
|
562 | |
392 | if (ch > 0x20 \ |
563 | if (ch > 0x20 |
393 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ |
564 | || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
394 | break; \ |
565 | break; |
|
|
566 | |
395 | ++dec->cur; \ |
567 | ++dec->cur; |
396 | } |
568 | } |
|
|
569 | } |
397 | |
570 | |
398 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
571 | #define ERR(reason) SB dec->err = reason; goto fail; SE |
|
|
572 | |
399 | #define EXPECT_CH(ch) SB \ |
573 | #define EXPECT_CH(ch) SB \ |
400 | if (*dec->cur != ch) \ |
574 | if (*dec->cur != ch) \ |
401 | ERR (# ch " expected"); \ |
575 | ERR (# ch " expected"); \ |
402 | ++dec->cur; \ |
576 | ++dec->cur; \ |
403 | SE |
577 | SE |
404 | |
578 | |
|
|
579 | #define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)") |
|
|
580 | #define DEC_DEC_DEPTH --dec->depth |
|
|
581 | |
405 | static SV *decode_sv (dec_t *dec); |
582 | static SV *decode_sv (dec_t *dec); |
406 | |
|
|
407 | #define APPEND_CH(ch) SB \ |
|
|
408 | SvGROW (sv, cur + 1 + 1); \ |
|
|
409 | SvPVX (sv)[cur++] = (ch); \ |
|
|
410 | SE |
|
|
411 | |
583 | |
412 | static signed char decode_hexdigit[256]; |
584 | static signed char decode_hexdigit[256]; |
413 | |
585 | |
414 | static UV |
586 | static UV |
415 | decode_4hex (dec_t *dec) |
587 | decode_4hex (dec_t *dec) |
416 | { |
588 | { |
417 | signed char d1, d2, d3, d4; |
589 | signed char d1, d2, d3, d4; |
|
|
590 | unsigned char *cur = (unsigned char *)dec->cur; |
418 | |
591 | |
419 | d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]]; |
|
|
420 | if (d1 < 0) ERR ("four hexadecimal digits expected"); |
592 | d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected"); |
421 | d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]]; |
|
|
422 | if (d2 < 0) ERR ("four hexadecimal digits expected"); |
593 | d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected"); |
423 | d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]]; |
|
|
424 | if (d3 < 0) ERR ("four hexadecimal digits expected"); |
594 | d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected"); |
425 | d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]]; |
|
|
426 | if (d4 < 0) ERR ("four hexadecimal digits expected"); |
595 | d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected"); |
427 | |
596 | |
428 | dec->cur += 4; |
597 | dec->cur += 4; |
429 | |
598 | |
430 | return ((UV)d1) << 12 |
599 | return ((UV)d1) << 12 |
431 | | ((UV)d2) << 8 |
600 | | ((UV)d2) << 8 |
… | |
… | |
437 | } |
606 | } |
438 | |
607 | |
439 | static SV * |
608 | static SV * |
440 | decode_str (dec_t *dec) |
609 | decode_str (dec_t *dec) |
441 | { |
610 | { |
442 | SV *sv = NEWSV (0,2); |
611 | SV *sv = 0; |
443 | STRLEN cur = 0; |
|
|
444 | int utf8 = 0; |
612 | int utf8 = 0; |
445 | |
613 | |
446 | for (;;) |
614 | do |
447 | { |
615 | { |
448 | unsigned char ch = *(unsigned char *)dec->cur; |
616 | char buf [SHORT_STRING_LEN + UTF8_MAXBYTES]; |
|
|
617 | char *cur = buf; |
449 | |
618 | |
450 | if (ch == '"') |
619 | do |
451 | break; |
|
|
452 | else if (ch == '\\') |
|
|
453 | { |
620 | { |
454 | switch (*++dec->cur) |
621 | unsigned char ch = *(unsigned char *)dec->cur++; |
|
|
622 | |
|
|
623 | if (ch == '"') |
455 | { |
624 | { |
456 | case '\\': |
625 | --dec->cur; |
457 | case '/': |
626 | break; |
458 | case '"': APPEND_CH (*dec->cur++); break; |
627 | } |
459 | |
628 | else if (ch == '\\') |
460 | case 'b': APPEND_CH ('\010'); ++dec->cur; break; |
629 | { |
461 | case 't': APPEND_CH ('\011'); ++dec->cur; break; |
630 | switch (*dec->cur) |
462 | case 'n': APPEND_CH ('\012'); ++dec->cur; break; |
|
|
463 | case 'f': APPEND_CH ('\014'); ++dec->cur; break; |
|
|
464 | case 'r': APPEND_CH ('\015'); ++dec->cur; break; |
|
|
465 | |
|
|
466 | case 'u': |
|
|
467 | { |
631 | { |
468 | UV lo, hi; |
632 | case '\\': |
469 | ++dec->cur; |
633 | case '/': |
|
|
634 | case '"': *cur++ = *dec->cur++; break; |
470 | |
635 | |
471 | hi = decode_4hex (dec); |
636 | case 'b': ++dec->cur; *cur++ = '\010'; break; |
472 | if (hi == (UV)-1) |
637 | case 't': ++dec->cur; *cur++ = '\011'; break; |
473 | goto fail; |
638 | case 'n': ++dec->cur; *cur++ = '\012'; break; |
|
|
639 | case 'f': ++dec->cur; *cur++ = '\014'; break; |
|
|
640 | case 'r': ++dec->cur; *cur++ = '\015'; break; |
474 | |
641 | |
475 | // possibly a surrogate pair |
642 | case 'u': |
476 | if (hi >= 0xd800 && hi < 0xdc00) |
|
|
477 | { |
643 | { |
478 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
644 | UV lo, hi; |
479 | ERR ("illegal surrogate character"); |
|
|
480 | |
|
|
481 | dec->cur += 2; |
645 | ++dec->cur; |
482 | |
646 | |
483 | lo = decode_4hex (dec); |
647 | hi = decode_4hex (dec); |
484 | if (lo == (UV)-1) |
648 | if (hi == (UV)-1) |
485 | goto fail; |
649 | goto fail; |
486 | |
650 | |
|
|
651 | // possibly a surrogate pair |
|
|
652 | if (hi >= 0xd800) |
|
|
653 | if (hi < 0xdc00) |
|
|
654 | { |
|
|
655 | if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
|
|
656 | ERR ("missing low surrogate character in surrogate pair"); |
|
|
657 | |
|
|
658 | dec->cur += 2; |
|
|
659 | |
|
|
660 | lo = decode_4hex (dec); |
|
|
661 | if (lo == (UV)-1) |
|
|
662 | goto fail; |
|
|
663 | |
487 | if (lo < 0xdc00 || lo >= 0xe000) |
664 | if (lo < 0xdc00 || lo >= 0xe000) |
488 | ERR ("surrogate pair expected"); |
665 | ERR ("surrogate pair expected"); |
489 | |
666 | |
490 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
667 | hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
|
|
668 | } |
|
|
669 | else if (hi < 0xe000) |
|
|
670 | ERR ("missing high surrogate character in surrogate pair"); |
|
|
671 | |
|
|
672 | if (hi >= 0x80) |
|
|
673 | { |
|
|
674 | utf8 = 1; |
|
|
675 | |
|
|
676 | cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
|
|
677 | } |
|
|
678 | else |
|
|
679 | *cur++ = hi; |
491 | } |
680 | } |
492 | else if (lo >= 0xdc00 && lo < 0xe000) |
|
|
493 | ERR ("illegal surrogate character"); |
|
|
494 | |
|
|
495 | if (hi >= 0x80) |
|
|
496 | { |
681 | break; |
497 | utf8 = 1; |
|
|
498 | |
682 | |
499 | SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits |
|
|
500 | cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv); |
|
|
501 | } |
|
|
502 | else |
683 | default: |
503 | APPEND_CH (hi); |
684 | --dec->cur; |
|
|
685 | ERR ("illegal backslash escape sequence in string"); |
504 | } |
686 | } |
|
|
687 | } |
|
|
688 | else if (ch >= 0x20 && ch <= 0x7f) |
|
|
689 | *cur++ = ch; |
|
|
690 | else if (ch >= 0x80) |
|
|
691 | { |
|
|
692 | STRLEN clen; |
|
|
693 | UV uch; |
|
|
694 | |
|
|
695 | --dec->cur; |
|
|
696 | |
|
|
697 | uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen); |
|
|
698 | if (clen == (STRLEN)-1) |
|
|
699 | ERR ("malformed UTF-8 character in JSON string"); |
|
|
700 | |
|
|
701 | do |
|
|
702 | *cur++ = *dec->cur++; |
|
|
703 | while (--clen); |
|
|
704 | |
|
|
705 | utf8 = 1; |
|
|
706 | } |
|
|
707 | else |
|
|
708 | { |
|
|
709 | --dec->cur; |
|
|
710 | |
|
|
711 | if (!ch) |
|
|
712 | ERR ("unexpected end of string while parsing JSON string"); |
505 | break; |
713 | else |
|
|
714 | ERR ("invalid character encountered while parsing JSON string"); |
506 | } |
715 | } |
507 | } |
716 | } |
508 | else if (ch >= 0x20 && ch <= 0x7f) |
717 | while (cur < buf + SHORT_STRING_LEN); |
509 | APPEND_CH (*dec->cur++); |
718 | |
510 | else if (ch >= 0x80) |
719 | { |
|
|
720 | STRLEN len = cur - buf; |
|
|
721 | |
|
|
722 | if (sv) |
511 | { |
723 | { |
512 | STRLEN clen; |
724 | SvGROW (sv, SvCUR (sv) + len + 1); |
513 | UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
725 | memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
514 | if (clen < 0) |
726 | SvCUR_set (sv, SvCUR (sv) + len); |
515 | ERR ("malformed UTF-8 character in string, cannot convert to JSON"); |
|
|
516 | |
|
|
517 | SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits |
|
|
518 | memcpy (SvPVX (sv) + cur, dec->cur, clen); |
|
|
519 | dec->cur += clen; |
|
|
520 | } |
727 | } |
521 | else |
728 | else |
522 | ERR ("invalid character encountered"); |
729 | sv = newSVpvn (buf, len); |
523 | } |
730 | } |
|
|
731 | } |
|
|
732 | while (*dec->cur != '"'); |
524 | |
733 | |
525 | ++dec->cur; |
734 | ++dec->cur; |
526 | |
735 | |
|
|
736 | if (sv) |
|
|
737 | { |
527 | SvPOK_only (sv); |
738 | SvPOK_only (sv); |
528 | |
|
|
529 | SvCUR_set (sv, cur); |
|
|
530 | *SvEND (sv) = 0; |
739 | *SvEND (sv) = 0; |
531 | |
740 | |
532 | if (utf8) |
741 | if (utf8) |
533 | SvUTF8_on (sv); |
742 | SvUTF8_on (sv); |
|
|
743 | } |
|
|
744 | else |
|
|
745 | sv = newSVpvn ("", 0); |
534 | |
746 | |
535 | return sv; |
747 | return sv; |
536 | |
748 | |
537 | fail: |
749 | fail: |
538 | SvREFCNT_dec (sv); |
|
|
539 | return 0; |
750 | return 0; |
540 | } |
751 | } |
541 | |
752 | |
542 | static SV * |
753 | static SV * |
543 | decode_num (dec_t *dec) |
754 | decode_num (dec_t *dec) |
… | |
… | |
553 | { |
764 | { |
554 | ++dec->cur; |
765 | ++dec->cur; |
555 | if (*dec->cur >= '0' && *dec->cur <= '9') |
766 | if (*dec->cur >= '0' && *dec->cur <= '9') |
556 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
767 | ERR ("malformed number (leading zero must not be followed by another digit)"); |
557 | } |
768 | } |
558 | |
769 | else if (*dec->cur < '0' || *dec->cur > '9') |
559 | // int |
770 | ERR ("malformed number (no digits after initial minus)"); |
|
|
771 | else |
|
|
772 | do |
|
|
773 | { |
|
|
774 | ++dec->cur; |
|
|
775 | } |
560 | while (*dec->cur >= '0' && *dec->cur <= '9') |
776 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
561 | ++dec->cur; |
|
|
562 | |
777 | |
563 | // [frac] |
778 | // [frac] |
564 | if (*dec->cur == '.') |
779 | if (*dec->cur == '.') |
565 | { |
780 | { |
566 | is_nv = 1; |
781 | ++dec->cur; |
|
|
782 | |
|
|
783 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
784 | ERR ("malformed number (no digits after decimal point)"); |
567 | |
785 | |
568 | do |
786 | do |
569 | { |
787 | { |
570 | ++dec->cur; |
788 | ++dec->cur; |
571 | } |
789 | } |
572 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
790 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
|
|
791 | |
|
|
792 | is_nv = 1; |
573 | } |
793 | } |
574 | |
794 | |
575 | // [exp] |
795 | // [exp] |
576 | if (*dec->cur == 'e' || *dec->cur == 'E') |
796 | if (*dec->cur == 'e' || *dec->cur == 'E') |
577 | { |
797 | { |
578 | is_nv = 1; |
|
|
579 | |
|
|
580 | ++dec->cur; |
798 | ++dec->cur; |
|
|
799 | |
581 | if (*dec->cur == '-' || *dec->cur == '+') |
800 | if (*dec->cur == '-' || *dec->cur == '+') |
582 | ++dec->cur; |
801 | ++dec->cur; |
583 | |
802 | |
|
|
803 | if (*dec->cur < '0' || *dec->cur > '9') |
|
|
804 | ERR ("malformed number (no digits after exp sign)"); |
|
|
805 | |
|
|
806 | do |
|
|
807 | { |
|
|
808 | ++dec->cur; |
|
|
809 | } |
584 | while (*dec->cur >= '0' && *dec->cur <= '9') |
810 | while (*dec->cur >= '0' && *dec->cur <= '9'); |
585 | ++dec->cur; |
811 | |
|
|
812 | is_nv = 1; |
586 | } |
813 | } |
587 | |
814 | |
588 | if (!is_nv) |
815 | if (!is_nv) |
589 | { |
816 | { |
590 | UV uv; |
817 | UV uv; |
… | |
… | |
608 | static SV * |
835 | static SV * |
609 | decode_av (dec_t *dec) |
836 | decode_av (dec_t *dec) |
610 | { |
837 | { |
611 | AV *av = newAV (); |
838 | AV *av = newAV (); |
612 | |
839 | |
|
|
840 | DEC_INC_DEPTH; |
|
|
841 | decode_ws (dec); |
|
|
842 | |
|
|
843 | if (*dec->cur == ']') |
|
|
844 | ++dec->cur; |
|
|
845 | else |
613 | for (;;) |
846 | for (;;) |
614 | { |
847 | { |
615 | SV *value; |
848 | SV *value; |
616 | |
849 | |
617 | value = decode_sv (dec); |
850 | value = decode_sv (dec); |
618 | if (!value) |
851 | if (!value) |
619 | goto fail; |
852 | goto fail; |
620 | |
853 | |
621 | av_push (av, value); |
854 | av_push (av, value); |
622 | |
855 | |
623 | WS; |
856 | decode_ws (dec); |
624 | |
857 | |
625 | if (*dec->cur == ']') |
858 | if (*dec->cur == ']') |
626 | { |
859 | { |
627 | ++dec->cur; |
860 | ++dec->cur; |
628 | break; |
861 | break; |
|
|
862 | } |
629 | } |
863 | |
630 | |
|
|
631 | if (*dec->cur != ',') |
864 | if (*dec->cur != ',') |
632 | ERR (", or ] expected while parsing array"); |
865 | ERR (", or ] expected while parsing array"); |
633 | |
866 | |
634 | ++dec->cur; |
867 | ++dec->cur; |
635 | } |
868 | } |
636 | |
869 | |
|
|
870 | DEC_DEC_DEPTH; |
637 | return newRV_noinc ((SV *)av); |
871 | return newRV_noinc ((SV *)av); |
638 | |
872 | |
639 | fail: |
873 | fail: |
640 | SvREFCNT_dec (av); |
874 | SvREFCNT_dec (av); |
|
|
875 | DEC_DEC_DEPTH; |
641 | return 0; |
876 | return 0; |
642 | } |
877 | } |
643 | |
878 | |
644 | static SV * |
879 | static SV * |
645 | decode_hv (dec_t *dec) |
880 | decode_hv (dec_t *dec) |
646 | { |
881 | { |
647 | HV *hv = newHV (); |
882 | HV *hv = newHV (); |
648 | |
883 | |
|
|
884 | DEC_INC_DEPTH; |
|
|
885 | decode_ws (dec); |
|
|
886 | |
|
|
887 | if (*dec->cur == '}') |
|
|
888 | ++dec->cur; |
|
|
889 | else |
649 | for (;;) |
890 | for (;;) |
650 | { |
891 | { |
651 | SV *key, *value; |
892 | SV *key, *value; |
652 | |
893 | |
653 | WS; EXPECT_CH ('"'); |
894 | decode_ws (dec); EXPECT_CH ('"'); |
654 | |
895 | |
655 | key = decode_str (dec); |
896 | key = decode_str (dec); |
656 | if (!key) |
897 | if (!key) |
657 | goto fail; |
|
|
658 | |
|
|
659 | WS; EXPECT_CH (':'); |
|
|
660 | |
|
|
661 | value = decode_sv (dec); |
|
|
662 | if (!value) |
|
|
663 | { |
|
|
664 | SvREFCNT_dec (key); |
|
|
665 | goto fail; |
898 | goto fail; |
|
|
899 | |
|
|
900 | decode_ws (dec); EXPECT_CH (':'); |
|
|
901 | |
|
|
902 | value = decode_sv (dec); |
|
|
903 | if (!value) |
|
|
904 | { |
|
|
905 | SvREFCNT_dec (key); |
|
|
906 | goto fail; |
666 | } |
907 | } |
667 | |
908 | |
668 | //TODO: optimise |
|
|
669 | hv_store_ent (hv, key, value, 0); |
909 | hv_store_ent (hv, key, value, 0); |
|
|
910 | SvREFCNT_dec (key); |
670 | |
911 | |
671 | WS; |
912 | decode_ws (dec); |
672 | |
913 | |
673 | if (*dec->cur == '}') |
914 | if (*dec->cur == '}') |
674 | { |
915 | { |
675 | ++dec->cur; |
916 | ++dec->cur; |
676 | break; |
917 | break; |
677 | } |
918 | } |
678 | |
919 | |
679 | if (*dec->cur != ',') |
920 | if (*dec->cur != ',') |
680 | ERR (", or } expected while parsing object/hash"); |
921 | ERR (", or } expected while parsing object/hash"); |
681 | |
922 | |
682 | ++dec->cur; |
923 | ++dec->cur; |
683 | } |
924 | } |
684 | |
925 | |
|
|
926 | DEC_DEC_DEPTH; |
685 | return newRV_noinc ((SV *)hv); |
927 | return newRV_noinc ((SV *)hv); |
686 | |
928 | |
687 | fail: |
929 | fail: |
688 | SvREFCNT_dec (hv); |
930 | SvREFCNT_dec (hv); |
|
|
931 | DEC_DEC_DEPTH; |
689 | return 0; |
932 | return 0; |
690 | } |
933 | } |
691 | |
934 | |
692 | static SV * |
935 | static SV * |
693 | decode_sv (dec_t *dec) |
936 | decode_sv (dec_t *dec) |
694 | { |
937 | { |
695 | WS; |
938 | decode_ws (dec); |
696 | switch (*dec->cur) |
939 | switch (*dec->cur) |
697 | { |
940 | { |
698 | case '"': ++dec->cur; return decode_str (dec); |
941 | case '"': ++dec->cur; return decode_str (dec); |
699 | case '[': ++dec->cur; return decode_av (dec); |
942 | case '[': ++dec->cur; return decode_av (dec); |
700 | case '{': ++dec->cur; return decode_hv (dec); |
943 | case '{': ++dec->cur; return decode_hv (dec); |
… | |
… | |
728 | |
971 | |
729 | case 'n': |
972 | case 'n': |
730 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
973 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
731 | { |
974 | { |
732 | dec->cur += 4; |
975 | dec->cur += 4; |
733 | return newSViv (1); |
976 | return newSVsv (&PL_sv_undef); |
734 | } |
977 | } |
735 | else |
978 | else |
736 | ERR ("'null' expected"); |
979 | ERR ("'null' expected"); |
737 | |
980 | |
738 | break; |
981 | break; |
739 | |
982 | |
740 | default: |
983 | default: |
741 | ERR ("malformed json string"); |
984 | ERR ("malformed JSON string, neither array, object, number, string or atom"); |
742 | break; |
985 | break; |
743 | } |
986 | } |
744 | |
987 | |
745 | fail: |
988 | fail: |
746 | return 0; |
989 | return 0; |
747 | } |
990 | } |
748 | |
991 | |
749 | static SV * |
992 | static SV * |
750 | decode_json (SV *string, UV flags) |
993 | decode_json (SV *string, U32 flags, UV *offset_return) |
751 | { |
994 | { |
|
|
995 | dec_t dec; |
|
|
996 | UV offset; |
752 | SV *sv; |
997 | SV *sv; |
753 | |
998 | |
|
|
999 | SvGETMAGIC (string); |
|
|
1000 | SvUPGRADE (string, SVt_PV); |
|
|
1001 | |
754 | if (!(flags & F_UTF8)) |
1002 | if (flags & F_UTF8) |
|
|
1003 | sv_utf8_downgrade (string, 0); |
|
|
1004 | else |
755 | sv_utf8_upgrade (string); |
1005 | sv_utf8_upgrade (string); |
756 | |
1006 | |
757 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
1007 | SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
758 | |
1008 | |
759 | dec_t dec; |
|
|
760 | dec.flags = flags; |
1009 | dec.flags = flags; |
761 | dec.cur = SvPVX (string); |
1010 | dec.cur = SvPVX (string); |
762 | dec.end = SvEND (string); |
1011 | dec.end = SvEND (string); |
763 | dec.err = 0; |
1012 | dec.err = 0; |
|
|
1013 | dec.depth = 0; |
|
|
1014 | dec.maxdepth = DEC_DEPTH (dec.flags); |
764 | |
1015 | |
765 | *dec.end = 1; // invalid anywhere |
1016 | *dec.end = 0; // this should basically be a nop, too, but make sure it's there |
766 | sv = decode_sv (&dec); |
1017 | sv = decode_sv (&dec); |
767 | *dec.end = 0; |
1018 | |
|
|
1019 | if (!(offset_return || !sv)) |
|
|
1020 | { |
|
|
1021 | // check for trailing garbage |
|
|
1022 | decode_ws (&dec); |
|
|
1023 | |
|
|
1024 | if (*dec.cur) |
|
|
1025 | { |
|
|
1026 | dec.err = "garbage after JSON object"; |
|
|
1027 | SvREFCNT_dec (sv); |
|
|
1028 | sv = 0; |
|
|
1029 | } |
|
|
1030 | } |
|
|
1031 | |
|
|
1032 | if (offset_return || !sv) |
|
|
1033 | { |
|
|
1034 | offset = dec.flags & F_UTF8 |
|
|
1035 | ? dec.cur - SvPVX (string) |
|
|
1036 | : utf8_distance (dec.cur, SvPVX (string)); |
|
|
1037 | |
|
|
1038 | if (offset_return) |
|
|
1039 | *offset_return = offset; |
|
|
1040 | } |
768 | |
1041 | |
769 | if (!sv) |
1042 | if (!sv) |
770 | { |
1043 | { |
771 | IV offset = utf8_distance (dec.cur, SvPVX (string)); |
|
|
772 | SV *uni = sv_newmortal (); |
1044 | SV *uni = sv_newmortal (); |
773 | |
1045 | |
|
|
1046 | // horrible hack to silence warning inside pv_uni_display |
|
|
1047 | COP cop = *PL_curcop; |
|
|
1048 | cop.cop_warnings = pWARN_NONE; |
|
|
1049 | ENTER; |
|
|
1050 | SAVEVPTR (PL_curcop); |
|
|
1051 | PL_curcop = &cop; |
774 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
1052 | pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
|
|
1053 | LEAVE; |
|
|
1054 | |
775 | croak ("%s, at character %d (%s)", |
1055 | croak ("%s, at character offset %d [\"%s\"]", |
776 | dec.err, |
1056 | dec.err, |
777 | (int)offset, |
1057 | (int)offset, |
778 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
1058 | dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
779 | } |
1059 | } |
780 | |
1060 | |
781 | sv = sv_2mortal (sv); |
1061 | sv = sv_2mortal (sv); |
782 | |
1062 | |
783 | if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
1063 | if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
784 | croak ("JSON object or array expected (but number, string, true, false or null found, use allow_nonref to allow this)"); |
1064 | croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
785 | |
1065 | |
786 | return sv; |
1066 | return sv; |
787 | } |
1067 | } |
788 | |
1068 | |
|
|
1069 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1070 | // XS interface functions |
|
|
1071 | |
789 | MODULE = JSON::XS PACKAGE = JSON::XS |
1072 | MODULE = JSON::XS PACKAGE = JSON::XS |
790 | |
1073 | |
791 | BOOT: |
1074 | BOOT: |
792 | { |
1075 | { |
793 | int i; |
1076 | int i; |
794 | |
1077 | |
795 | memset (decode_hexdigit, 0xff, 256); |
1078 | memset (decode_hexdigit, 0xff, 256); |
|
|
1079 | |
796 | for (i = 10; i--; ) |
1080 | for (i = 0; i < 256; ++i) |
797 | decode_hexdigit ['0' + i] = i; |
1081 | decode_hexdigit [i] = |
798 | |
1082 | i >= '0' && i <= '9' ? i - '0' |
799 | for (i = 6; --i; ) |
1083 | : i >= 'a' && i <= 'f' ? i - 'a' + 10 |
800 | { |
1084 | : i >= 'A' && i <= 'F' ? i - 'A' + 10 |
801 | decode_hexdigit ['a' + i] = 10 + i; |
1085 | : -1; |
802 | decode_hexdigit ['A' + i] = 10 + i; |
|
|
803 | } |
|
|
804 | |
1086 | |
805 | json_stash = gv_stashpv ("JSON::XS", 1); |
1087 | json_stash = gv_stashpv ("JSON::XS", 1); |
806 | } |
1088 | } |
|
|
1089 | |
|
|
1090 | PROTOTYPES: DISABLE |
807 | |
1091 | |
808 | SV *new (char *dummy) |
1092 | SV *new (char *dummy) |
809 | CODE: |
1093 | CODE: |
810 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
1094 | RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
811 | OUTPUT: |
1095 | OUTPUT: |
812 | RETVAL |
1096 | RETVAL |
813 | |
1097 | |
814 | SV *ascii (SV *self, int enable) |
1098 | SV *ascii (SV *self, int enable = 1) |
815 | ALIAS: |
1099 | ALIAS: |
816 | ascii = F_ASCII |
1100 | ascii = F_ASCII |
|
|
1101 | latin1 = F_LATIN1 |
817 | utf8 = F_UTF8 |
1102 | utf8 = F_UTF8 |
818 | indent = F_INDENT |
1103 | indent = F_INDENT |
819 | canonical = F_CANONICAL |
1104 | canonical = F_CANONICAL |
820 | space_before = F_SPACE_BEFORE |
1105 | space_before = F_SPACE_BEFORE |
821 | space_after = F_SPACE_AFTER |
1106 | space_after = F_SPACE_AFTER |
822 | json_rpc = F_JSON_RPC |
|
|
823 | pretty = F_PRETTY |
1107 | pretty = F_PRETTY |
824 | allow_nonref = F_ALLOW_NONREF |
1108 | allow_nonref = F_ALLOW_NONREF |
|
|
1109 | shrink = F_SHRINK |
825 | CODE: |
1110 | CODE: |
826 | { |
1111 | { |
827 | UV *uv = SvJSON (self); |
1112 | UV *uv = SvJSON (self); |
828 | if (enable) |
1113 | if (enable) |
829 | *uv |= ix; |
1114 | *uv |= ix; |
… | |
… | |
833 | RETVAL = newSVsv (self); |
1118 | RETVAL = newSVsv (self); |
834 | } |
1119 | } |
835 | OUTPUT: |
1120 | OUTPUT: |
836 | RETVAL |
1121 | RETVAL |
837 | |
1122 | |
|
|
1123 | SV *max_depth (SV *self, UV max_depth = 0x80000000UL) |
|
|
1124 | CODE: |
|
|
1125 | { |
|
|
1126 | UV *uv = SvJSON (self); |
|
|
1127 | UV log2 = 0; |
|
|
1128 | |
|
|
1129 | if (max_depth > 0x80000000UL) max_depth = 0x80000000UL; |
|
|
1130 | |
|
|
1131 | while ((1UL << log2) < max_depth) |
|
|
1132 | ++log2; |
|
|
1133 | |
|
|
1134 | *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH); |
|
|
1135 | |
|
|
1136 | RETVAL = newSVsv (self); |
|
|
1137 | } |
|
|
1138 | OUTPUT: |
|
|
1139 | RETVAL |
|
|
1140 | |
838 | void encode (SV *self, SV *scalar) |
1141 | void encode (SV *self, SV *scalar) |
839 | PPCODE: |
1142 | PPCODE: |
840 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
1143 | XPUSHs (encode_json (scalar, *SvJSON (self))); |
841 | |
1144 | |
842 | void decode (SV *self, SV *jsonstr) |
1145 | void decode (SV *self, SV *jsonstr) |
843 | PPCODE: |
1146 | PPCODE: |
844 | XPUSHs (decode_json (jsonstr, *SvJSON (self))); |
1147 | XPUSHs (decode_json (jsonstr, *SvJSON (self), 0)); |
|
|
1148 | |
|
|
1149 | void decode_prefix (SV *self, SV *jsonstr) |
|
|
1150 | PPCODE: |
|
|
1151 | { |
|
|
1152 | UV offset; |
|
|
1153 | EXTEND (SP, 2); |
|
|
1154 | PUSHs (decode_json (jsonstr, *SvJSON (self), &offset)); |
|
|
1155 | PUSHs (sv_2mortal (newSVuv (offset))); |
|
|
1156 | } |
|
|
1157 | |
|
|
1158 | PROTOTYPES: ENABLE |
845 | |
1159 | |
846 | void to_json (SV *scalar) |
1160 | void to_json (SV *scalar) |
|
|
1161 | ALIAS: |
|
|
1162 | objToJson = 0 |
847 | PPCODE: |
1163 | PPCODE: |
848 | XPUSHs (encode_json (scalar, F_UTF8)); |
1164 | XPUSHs (encode_json (scalar, F_DEFAULT | F_UTF8)); |
849 | |
1165 | |
850 | void from_json (SV *jsonstr) |
1166 | void from_json (SV *jsonstr) |
|
|
1167 | ALIAS: |
|
|
1168 | jsonToObj = 0 |
851 | PPCODE: |
1169 | PPCODE: |
852 | XPUSHs (decode_json (jsonstr, F_UTF8)); |
1170 | XPUSHs (decode_json (jsonstr, F_DEFAULT | F_UTF8, 0)); |
853 | |
1171 | |