1 |
root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include "assert.h" |
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#include "string.h" |
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#include "stdlib.h" |
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#define F_ASCII 0x00000001 |
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#define F_UTF8 0x00000002 |
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#define F_INDENT 0x00000004 |
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#define F_CANONICAL 0x00000008 |
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#define F_SPACE_BEFORE 0x00000010 |
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#define F_SPACE_AFTER 0x00000020 |
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1.3 |
#define F_ALLOW_NONREF 0x00000080 |
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1.6 |
#define F_SHRINK 0x00000100 |
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1.1 |
|
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1.2 |
#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER |
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1.1 |
#define F_DEFAULT 0 |
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#define INIT_SIZE 32 // initial scalar size to be allocated |
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1.12 |
#define INDENT_STEP 3 // spaces per indentation level |
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#define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character |
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#define SHORT_STRING_LEN 256 // special-case strings of up to this size |
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1.1 |
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#define SB do { |
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#define SE } while (0) |
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1.12 |
static HV *json_stash; // JSON::XS:: |
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1.1 |
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32 |
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1.12 |
///////////////////////////////////////////////////////////////////////////// |
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// utility functions |
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1.1 |
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static UV * |
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SvJSON (SV *sv) |
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{ |
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if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash)) |
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croak ("object is not of type JSON::XS"); |
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return &SvUVX (SvRV (sv)); |
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} |
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1.7 |
static void |
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shrink (SV *sv) |
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{ |
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sv_utf8_downgrade (sv, 1); |
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1.12 |
if (SvLEN (sv) > SvCUR (sv) + 1) |
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{ |
50 |
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1.7 |
#ifdef SvPV_shrink_to_cur |
51 |
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1.12 |
SvPV_shrink_to_cur (sv); |
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#elif defined (SvPV_renew) |
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SvPV_renew (sv, SvCUR (sv) + 1); |
54 |
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1.7 |
#endif |
55 |
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1.12 |
} |
56 |
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1.7 |
} |
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1.1 |
///////////////////////////////////////////////////////////////////////////// |
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1.12 |
// encoder |
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61 |
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// structure used for encoding JSON |
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typedef struct |
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{ |
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char *cur; // SvPVX (sv) + current output position |
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char *end; // SvEND (sv) |
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SV *sv; // result scalar |
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UV flags; // F_* |
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int indent; // indentation level |
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int max_depth; // max. recursion level |
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} enc_t; |
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1.1 |
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static void |
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need (enc_t *enc, STRLEN len) |
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{ |
75 |
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if (enc->cur + len >= enc->end) |
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{ |
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STRLEN cur = enc->cur - SvPVX (enc->sv); |
78 |
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SvGROW (enc->sv, cur + len + 1); |
79 |
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enc->cur = SvPVX (enc->sv) + cur; |
80 |
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1.4 |
enc->end = SvPVX (enc->sv) + SvLEN (enc->sv); |
81 |
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1.1 |
} |
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} |
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84 |
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static void |
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encode_ch (enc_t *enc, char ch) |
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{ |
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need (enc, 1); |
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*enc->cur++ = ch; |
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} |
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91 |
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static void |
92 |
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encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) |
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{ |
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char *end = str + len; |
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96 |
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1.4 |
need (enc, len); |
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98 |
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1.1 |
while (str < end) |
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{ |
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unsigned char ch = *(unsigned char *)str; |
101 |
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1.4 |
|
102 |
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1.6 |
if (ch >= 0x20 && ch < 0x80) // most common case |
103 |
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1.4 |
{ |
104 |
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1.6 |
if (ch == '"') // but with slow exceptions |
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{ |
106 |
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need (enc, len += 1); |
107 |
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*enc->cur++ = '\\'; |
108 |
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*enc->cur++ = '"'; |
109 |
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} |
110 |
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else if (ch == '\\') |
111 |
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{ |
112 |
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need (enc, len += 1); |
113 |
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*enc->cur++ = '\\'; |
114 |
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*enc->cur++ = '\\'; |
115 |
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} |
116 |
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else |
117 |
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*enc->cur++ = ch; |
118 |
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119 |
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1.4 |
++str; |
120 |
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1.1 |
} |
121 |
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else |
122 |
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{ |
123 |
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1.6 |
switch (ch) |
124 |
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1.1 |
{ |
125 |
root |
1.6 |
case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; |
126 |
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case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; |
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case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; |
128 |
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case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; |
129 |
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case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; |
130 |
root |
1.1 |
|
131 |
root |
1.6 |
default: |
132 |
root |
1.1 |
{ |
133 |
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1.6 |
STRLEN clen; |
134 |
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UV uch; |
135 |
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136 |
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if (is_utf8) |
137 |
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{ |
138 |
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uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); |
139 |
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if (clen == (STRLEN)-1) |
140 |
root |
1.9 |
croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str); |
141 |
root |
1.6 |
} |
142 |
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else |
143 |
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{ |
144 |
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uch = ch; |
145 |
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clen = 1; |
146 |
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} |
147 |
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148 |
root |
1.9 |
if (uch > 0x10FFFFUL) |
149 |
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croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); |
150 |
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151 |
root |
1.6 |
if (uch < 0x80 || enc->flags & F_ASCII) |
152 |
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{ |
153 |
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if (uch > 0xFFFFUL) |
154 |
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{ |
155 |
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need (enc, len += 11); |
156 |
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sprintf (enc->cur, "\\u%04x\\u%04x", |
157 |
root |
1.10 |
(int)((uch - 0x10000) / 0x400 + 0xD800), |
158 |
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(int)((uch - 0x10000) % 0x400 + 0xDC00)); |
159 |
root |
1.6 |
enc->cur += 12; |
160 |
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} |
161 |
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else |
162 |
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{ |
163 |
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static char hexdigit [16] = "0123456789abcdef"; |
164 |
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need (enc, len += 5); |
165 |
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*enc->cur++ = '\\'; |
166 |
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*enc->cur++ = 'u'; |
167 |
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*enc->cur++ = hexdigit [ uch >> 12 ]; |
168 |
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*enc->cur++ = hexdigit [(uch >> 8) & 15]; |
169 |
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*enc->cur++ = hexdigit [(uch >> 4) & 15]; |
170 |
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*enc->cur++ = hexdigit [(uch >> 0) & 15]; |
171 |
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} |
172 |
root |
1.4 |
|
173 |
root |
1.6 |
str += clen; |
174 |
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} |
175 |
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else if (is_utf8) |
176 |
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{ |
177 |
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need (enc, len += clen); |
178 |
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do |
179 |
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{ |
180 |
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*enc->cur++ = *str++; |
181 |
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} |
182 |
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while (--clen); |
183 |
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} |
184 |
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else |
185 |
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{ |
186 |
root |
1.12 |
need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed |
187 |
root |
1.6 |
enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0); |
188 |
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++str; |
189 |
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} |
190 |
root |
1.5 |
} |
191 |
root |
1.4 |
} |
192 |
root |
1.1 |
} |
193 |
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194 |
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--len; |
195 |
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} |
196 |
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} |
197 |
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198 |
root |
1.12 |
static void |
199 |
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encode_indent (enc_t *enc) |
200 |
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{ |
201 |
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if (enc->flags & F_INDENT) |
202 |
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{ |
203 |
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int spaces = enc->indent * INDENT_STEP; |
204 |
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205 |
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need (enc, spaces); |
206 |
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memset (enc->cur, ' ', spaces); |
207 |
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enc->cur += spaces; |
208 |
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} |
209 |
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} |
210 |
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211 |
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static void |
212 |
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encode_space (enc_t *enc) |
213 |
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{ |
214 |
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need (enc, 1); |
215 |
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encode_ch (enc, ' '); |
216 |
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} |
217 |
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218 |
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static void |
219 |
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encode_nl (enc_t *enc) |
220 |
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{ |
221 |
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if (enc->flags & F_INDENT) |
222 |
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{ |
223 |
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need (enc, 1); |
224 |
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encode_ch (enc, '\n'); |
225 |
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} |
226 |
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} |
227 |
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228 |
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static void |
229 |
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encode_comma (enc_t *enc) |
230 |
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{ |
231 |
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encode_ch (enc, ','); |
232 |
root |
1.1 |
|
233 |
root |
1.12 |
if (enc->flags & F_INDENT) |
234 |
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encode_nl (enc); |
235 |
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else if (enc->flags & F_SPACE_AFTER) |
236 |
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encode_space (enc); |
237 |
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} |
238 |
root |
1.1 |
|
239 |
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static void encode_sv (enc_t *enc, SV *sv); |
240 |
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241 |
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static void |
242 |
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encode_av (enc_t *enc, AV *av) |
243 |
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{ |
244 |
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int i, len = av_len (av); |
245 |
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|
246 |
root |
1.12 |
encode_ch (enc, '['); encode_nl (enc); |
247 |
root |
1.1 |
++enc->indent; |
248 |
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249 |
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for (i = 0; i <= len; ++i) |
250 |
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{ |
251 |
root |
1.12 |
encode_indent (enc); |
252 |
root |
1.1 |
encode_sv (enc, *av_fetch (av, i, 0)); |
253 |
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254 |
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if (i < len) |
255 |
root |
1.12 |
encode_comma (enc); |
256 |
root |
1.1 |
} |
257 |
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258 |
root |
1.12 |
encode_nl (enc); |
259 |
root |
1.1 |
|
260 |
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--enc->indent; |
261 |
root |
1.12 |
encode_indent (enc); encode_ch (enc, ']'); |
262 |
root |
1.1 |
} |
263 |
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264 |
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static void |
265 |
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encode_he (enc_t *enc, HE *he) |
266 |
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{ |
267 |
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encode_ch (enc, '"'); |
268 |
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|
269 |
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if (HeKLEN (he) == HEf_SVKEY) |
270 |
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{ |
271 |
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SV *sv = HeSVKEY (he); |
272 |
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STRLEN len; |
273 |
root |
1.4 |
char *str; |
274 |
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|
275 |
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SvGETMAGIC (sv); |
276 |
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str = SvPV (sv, len); |
277 |
root |
1.1 |
|
278 |
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encode_str (enc, str, len, SvUTF8 (sv)); |
279 |
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} |
280 |
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else |
281 |
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encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); |
282 |
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|
283 |
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encode_ch (enc, '"'); |
284 |
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|
285 |
root |
1.12 |
if (enc->flags & F_SPACE_BEFORE) encode_space (enc); |
286 |
root |
1.1 |
encode_ch (enc, ':'); |
287 |
root |
1.12 |
if (enc->flags & F_SPACE_AFTER ) encode_space (enc); |
288 |
root |
1.1 |
encode_sv (enc, HeVAL (he)); |
289 |
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} |
290 |
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291 |
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// compare hash entries, used when all keys are bytestrings |
292 |
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static int |
293 |
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he_cmp_fast (const void *a_, const void *b_) |
294 |
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{ |
295 |
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int cmp; |
296 |
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297 |
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HE *a = *(HE **)a_; |
298 |
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HE *b = *(HE **)b_; |
299 |
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300 |
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STRLEN la = HeKLEN (a); |
301 |
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STRLEN lb = HeKLEN (b); |
302 |
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|
303 |
root |
1.11 |
if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) |
304 |
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cmp = la - lb; |
305 |
root |
1.1 |
|
306 |
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return cmp; |
307 |
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} |
308 |
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|
309 |
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// compare hash entries, used when some keys are sv's or utf-x |
310 |
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static int |
311 |
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he_cmp_slow (const void *a, const void *b) |
312 |
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{ |
313 |
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return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); |
314 |
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} |
315 |
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316 |
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static void |
317 |
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encode_hv (enc_t *enc, HV *hv) |
318 |
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{ |
319 |
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int count, i; |
320 |
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|
321 |
root |
1.12 |
encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; |
322 |
root |
1.1 |
|
323 |
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if ((count = hv_iterinit (hv))) |
324 |
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{ |
325 |
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// for canonical output we have to sort by keys first |
326 |
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// actually, this is mostly due to the stupid so-called |
327 |
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// security workaround added somewhere in 5.8.x. |
328 |
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// that randomises hash orderings |
329 |
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if (enc->flags & F_CANONICAL) |
330 |
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{ |
331 |
root |
1.12 |
HE *he, *hes [count]; // if your compiler dies here, you need to enable C99 mode |
332 |
root |
1.1 |
int fast = 1; |
333 |
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|
334 |
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i = 0; |
335 |
|
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while ((he = hv_iternext (hv))) |
336 |
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{ |
337 |
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hes [i++] = he; |
338 |
|
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if (HeKLEN (he) < 0 || HeKUTF8 (he)) |
339 |
|
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fast = 0; |
340 |
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} |
341 |
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|
342 |
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assert (i == count); |
343 |
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|
344 |
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if (fast) |
345 |
|
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qsort (hes, count, sizeof (HE *), he_cmp_fast); |
346 |
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else |
347 |
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{ |
348 |
root |
1.8 |
// hack to forcefully disable "use bytes" |
349 |
|
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COP cop = *PL_curcop; |
350 |
root |
1.1 |
cop.op_private = 0; |
351 |
root |
1.8 |
|
352 |
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ENTER; |
353 |
|
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SAVETMPS; |
354 |
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|
355 |
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SAVEVPTR (PL_curcop); |
356 |
root |
1.1 |
PL_curcop = &cop; |
357 |
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|
358 |
|
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qsort (hes, count, sizeof (HE *), he_cmp_slow); |
359 |
root |
1.8 |
|
360 |
root |
1.1 |
FREETMPS; |
361 |
root |
1.8 |
LEAVE; |
362 |
root |
1.1 |
} |
363 |
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|
364 |
|
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for (i = 0; i < count; ++i) |
365 |
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{ |
366 |
root |
1.12 |
encode_indent (enc); |
367 |
root |
1.1 |
encode_he (enc, hes [i]); |
368 |
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|
369 |
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if (i < count - 1) |
370 |
root |
1.12 |
encode_comma (enc); |
371 |
root |
1.1 |
} |
372 |
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|
373 |
root |
1.12 |
encode_nl (enc); |
374 |
root |
1.1 |
} |
375 |
|
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else |
376 |
|
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{ |
377 |
|
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SV *sv; |
378 |
|
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HE *he = hv_iternext (hv); |
379 |
|
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|
380 |
|
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for (;;) |
381 |
|
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{ |
382 |
root |
1.12 |
encode_indent (enc); |
383 |
root |
1.1 |
encode_he (enc, he); |
384 |
|
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|
385 |
|
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if (!(he = hv_iternext (hv))) |
386 |
|
|
break; |
387 |
|
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|
388 |
root |
1.12 |
encode_comma (enc); |
389 |
root |
1.1 |
} |
390 |
|
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|
391 |
root |
1.12 |
encode_nl (enc); |
392 |
root |
1.1 |
} |
393 |
|
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} |
394 |
|
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|
395 |
root |
1.12 |
--enc->indent; encode_indent (enc); encode_ch (enc, '}'); |
396 |
root |
1.1 |
} |
397 |
|
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|
398 |
|
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static void |
399 |
|
|
encode_sv (enc_t *enc, SV *sv) |
400 |
|
|
{ |
401 |
root |
1.4 |
SvGETMAGIC (sv); |
402 |
|
|
|
403 |
root |
1.1 |
if (SvPOKp (sv)) |
404 |
|
|
{ |
405 |
|
|
STRLEN len; |
406 |
|
|
char *str = SvPV (sv, len); |
407 |
|
|
encode_ch (enc, '"'); |
408 |
|
|
encode_str (enc, str, len, SvUTF8 (sv)); |
409 |
|
|
encode_ch (enc, '"'); |
410 |
|
|
} |
411 |
|
|
else if (SvNOKp (sv)) |
412 |
|
|
{ |
413 |
|
|
need (enc, NV_DIG + 32); |
414 |
|
|
Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur); |
415 |
|
|
enc->cur += strlen (enc->cur); |
416 |
|
|
} |
417 |
|
|
else if (SvIOKp (sv)) |
418 |
|
|
{ |
419 |
|
|
need (enc, 64); |
420 |
|
|
enc->cur += |
421 |
|
|
SvIsUV(sv) |
422 |
|
|
? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) |
423 |
|
|
: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); |
424 |
|
|
} |
425 |
|
|
else if (SvROK (sv)) |
426 |
|
|
{ |
427 |
root |
1.9 |
SV *rv = SvRV (sv); |
428 |
|
|
|
429 |
root |
1.12 |
if (enc->indent >= enc->max_depth) |
430 |
root |
1.1 |
croak ("data structure too deep (hit recursion limit)"); |
431 |
|
|
|
432 |
root |
1.9 |
switch (SvTYPE (rv)) |
433 |
root |
1.1 |
{ |
434 |
root |
1.9 |
case SVt_PVAV: encode_av (enc, (AV *)rv); break; |
435 |
|
|
case SVt_PVHV: encode_hv (enc, (HV *)rv); break; |
436 |
root |
1.1 |
|
437 |
|
|
default: |
438 |
root |
1.9 |
croak ("encountered %s, but JSON can only represent references to arrays or hashes", |
439 |
|
|
SvPV_nolen (sv)); |
440 |
root |
1.1 |
} |
441 |
|
|
} |
442 |
|
|
else if (!SvOK (sv)) |
443 |
|
|
encode_str (enc, "null", 4, 0); |
444 |
|
|
else |
445 |
root |
1.9 |
croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", |
446 |
|
|
SvPV_nolen (sv), SvFLAGS (sv)); |
447 |
root |
1.1 |
} |
448 |
|
|
|
449 |
|
|
static SV * |
450 |
|
|
encode_json (SV *scalar, UV flags) |
451 |
|
|
{ |
452 |
root |
1.3 |
if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar)) |
453 |
root |
1.9 |
croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); |
454 |
root |
1.3 |
|
455 |
root |
1.1 |
enc_t enc; |
456 |
root |
1.12 |
enc.flags = flags; |
457 |
|
|
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
458 |
|
|
enc.cur = SvPVX (enc.sv); |
459 |
|
|
enc.end = SvEND (enc.sv); |
460 |
|
|
enc.indent = 0; |
461 |
|
|
enc.max_depth = 0x7fffffffUL; |
462 |
root |
1.1 |
|
463 |
|
|
SvPOK_only (enc.sv); |
464 |
|
|
encode_sv (&enc, scalar); |
465 |
|
|
|
466 |
|
|
if (!(flags & (F_ASCII | F_UTF8))) |
467 |
|
|
SvUTF8_on (enc.sv); |
468 |
|
|
|
469 |
|
|
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
470 |
root |
1.6 |
|
471 |
|
|
if (enc.flags & F_SHRINK) |
472 |
root |
1.7 |
shrink (enc.sv); |
473 |
|
|
|
474 |
root |
1.1 |
return enc.sv; |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
///////////////////////////////////////////////////////////////////////////// |
478 |
root |
1.12 |
// decoder |
479 |
root |
1.1 |
|
480 |
root |
1.12 |
// structure used for decoding JSON |
481 |
|
|
typedef struct |
482 |
|
|
{ |
483 |
|
|
char *cur; // current parser pointer |
484 |
|
|
char *end; // end of input string |
485 |
|
|
const char *err; // parse error, if != 0 |
486 |
|
|
UV flags; // F_* |
487 |
|
|
} dec_t; |
488 |
|
|
|
489 |
|
|
static void |
490 |
|
|
decode_ws (dec_t *dec) |
491 |
|
|
{ |
492 |
|
|
for (;;) |
493 |
|
|
{ |
494 |
|
|
char ch = *dec->cur; |
495 |
|
|
|
496 |
|
|
if (ch > 0x20 |
497 |
|
|
|| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) |
498 |
|
|
break; |
499 |
|
|
|
500 |
|
|
++dec->cur; |
501 |
root |
1.1 |
} |
502 |
root |
1.12 |
} |
503 |
root |
1.1 |
|
504 |
|
|
#define ERR(reason) SB dec->err = reason; goto fail; SE |
505 |
|
|
#define EXPECT_CH(ch) SB \ |
506 |
|
|
if (*dec->cur != ch) \ |
507 |
|
|
ERR (# ch " expected"); \ |
508 |
|
|
++dec->cur; \ |
509 |
|
|
SE |
510 |
|
|
|
511 |
|
|
static SV *decode_sv (dec_t *dec); |
512 |
|
|
|
513 |
|
|
static signed char decode_hexdigit[256]; |
514 |
|
|
|
515 |
|
|
static UV |
516 |
|
|
decode_4hex (dec_t *dec) |
517 |
|
|
{ |
518 |
|
|
signed char d1, d2, d3, d4; |
519 |
root |
1.12 |
unsigned char *cur = (unsigned char *)dec->cur; |
520 |
root |
1.1 |
|
521 |
root |
1.12 |
d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected"); |
522 |
|
|
d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected"); |
523 |
|
|
d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected"); |
524 |
|
|
d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected"); |
525 |
root |
1.1 |
|
526 |
|
|
dec->cur += 4; |
527 |
|
|
|
528 |
|
|
return ((UV)d1) << 12 |
529 |
|
|
| ((UV)d2) << 8 |
530 |
|
|
| ((UV)d3) << 4 |
531 |
|
|
| ((UV)d4); |
532 |
|
|
|
533 |
|
|
fail: |
534 |
|
|
return (UV)-1; |
535 |
|
|
} |
536 |
|
|
|
537 |
|
|
static SV * |
538 |
|
|
decode_str (dec_t *dec) |
539 |
|
|
{ |
540 |
root |
1.12 |
SV *sv = 0; |
541 |
root |
1.1 |
int utf8 = 0; |
542 |
|
|
|
543 |
root |
1.12 |
do |
544 |
root |
1.1 |
{ |
545 |
root |
1.12 |
char buf [SHORT_STRING_LEN + UTF8_MAX_LEN]; |
546 |
|
|
char *cur = buf; |
547 |
root |
1.1 |
|
548 |
root |
1.12 |
do |
549 |
root |
1.1 |
{ |
550 |
root |
1.12 |
unsigned char ch = *(unsigned char *)dec->cur++; |
551 |
|
|
|
552 |
|
|
if (ch == '"') |
553 |
|
|
{ |
554 |
|
|
--dec->cur; |
555 |
|
|
break; |
556 |
|
|
} |
557 |
|
|
else if (ch == '\\') |
558 |
root |
1.1 |
{ |
559 |
root |
1.12 |
switch (*dec->cur) |
560 |
root |
1.1 |
{ |
561 |
root |
1.12 |
case '\\': |
562 |
|
|
case '/': |
563 |
|
|
case '"': *cur++ = *dec->cur++; break; |
564 |
|
|
|
565 |
|
|
case 'b': ++dec->cur; *cur++ = '\010'; break; |
566 |
|
|
case 't': ++dec->cur; *cur++ = '\011'; break; |
567 |
|
|
case 'n': ++dec->cur; *cur++ = '\012'; break; |
568 |
|
|
case 'f': ++dec->cur; *cur++ = '\014'; break; |
569 |
|
|
case 'r': ++dec->cur; *cur++ = '\015'; break; |
570 |
root |
1.1 |
|
571 |
root |
1.12 |
case 'u': |
572 |
root |
1.1 |
{ |
573 |
root |
1.12 |
UV lo, hi; |
574 |
|
|
++dec->cur; |
575 |
root |
1.1 |
|
576 |
root |
1.12 |
hi = decode_4hex (dec); |
577 |
|
|
if (hi == (UV)-1) |
578 |
|
|
goto fail; |
579 |
root |
1.1 |
|
580 |
root |
1.12 |
// possibly a surrogate pair |
581 |
|
|
if (hi >= 0xd800) |
582 |
|
|
if (hi < 0xdc00) |
583 |
|
|
{ |
584 |
|
|
if (dec->cur [0] != '\\' || dec->cur [1] != 'u') |
585 |
|
|
ERR ("missing low surrogate character in surrogate pair"); |
586 |
|
|
|
587 |
|
|
dec->cur += 2; |
588 |
|
|
|
589 |
|
|
lo = decode_4hex (dec); |
590 |
|
|
if (lo == (UV)-1) |
591 |
|
|
goto fail; |
592 |
|
|
|
593 |
|
|
if (lo < 0xdc00 || lo >= 0xe000) |
594 |
|
|
ERR ("surrogate pair expected"); |
595 |
|
|
|
596 |
|
|
hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; |
597 |
|
|
} |
598 |
|
|
else if (hi < 0xe000) |
599 |
|
|
ERR ("missing high surrogate character in surrogate pair"); |
600 |
root |
1.1 |
|
601 |
root |
1.12 |
if (hi >= 0x80) |
602 |
|
|
{ |
603 |
|
|
utf8 = 1; |
604 |
root |
1.1 |
|
605 |
root |
1.12 |
cur = (char *)uvuni_to_utf8_flags (cur, hi, 0); |
606 |
|
|
} |
607 |
|
|
else |
608 |
|
|
*cur++ = hi; |
609 |
root |
1.1 |
} |
610 |
root |
1.12 |
break; |
611 |
|
|
|
612 |
|
|
default: |
613 |
|
|
--dec->cur; |
614 |
|
|
ERR ("illegal backslash escape sequence in string"); |
615 |
|
|
} |
616 |
|
|
} |
617 |
|
|
else if (ch >= 0x20 && ch <= 0x7f) |
618 |
|
|
*cur++ = ch; |
619 |
|
|
else if (ch >= 0x80) |
620 |
|
|
{ |
621 |
|
|
--dec->cur; |
622 |
root |
1.1 |
|
623 |
root |
1.12 |
STRLEN clen; |
624 |
|
|
UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); |
625 |
|
|
if (clen == (STRLEN)-1) |
626 |
|
|
ERR ("malformed UTF-8 character in JSON string"); |
627 |
root |
1.1 |
|
628 |
root |
1.12 |
do |
629 |
|
|
{ |
630 |
|
|
*cur++ = *dec->cur++; |
631 |
root |
1.1 |
} |
632 |
root |
1.12 |
while (--clen); |
633 |
root |
1.5 |
|
634 |
root |
1.12 |
utf8 = 1; |
635 |
root |
1.1 |
} |
636 |
root |
1.12 |
else if (!ch) |
637 |
|
|
ERR ("unexpected end of string while parsing json string"); |
638 |
|
|
else |
639 |
|
|
ERR ("invalid character encountered"); |
640 |
|
|
|
641 |
root |
1.1 |
} |
642 |
root |
1.12 |
while (cur < buf + SHORT_STRING_LEN); |
643 |
root |
1.1 |
|
644 |
root |
1.12 |
STRLEN len = cur - buf; |
645 |
root |
1.5 |
|
646 |
root |
1.12 |
if (sv) |
647 |
|
|
{ |
648 |
|
|
SvGROW (sv, SvCUR (sv) + len + 1); |
649 |
|
|
memcpy (SvPVX (sv) + SvCUR (sv), buf, len); |
650 |
|
|
SvCUR_set (sv, SvCUR (sv) + len); |
651 |
root |
1.1 |
} |
652 |
|
|
else |
653 |
root |
1.12 |
sv = newSVpvn (buf, len); |
654 |
root |
1.1 |
} |
655 |
root |
1.12 |
while (*dec->cur != '"'); |
656 |
root |
1.1 |
|
657 |
|
|
++dec->cur; |
658 |
|
|
|
659 |
root |
1.12 |
if (sv) |
660 |
|
|
{ |
661 |
|
|
SvPOK_only (sv); |
662 |
|
|
*SvEND (sv) = 0; |
663 |
root |
1.4 |
|
664 |
root |
1.12 |
if (utf8) |
665 |
|
|
SvUTF8_on (sv); |
666 |
|
|
} |
667 |
|
|
else |
668 |
|
|
sv = newSVpvn ("", 0); |
669 |
root |
1.6 |
|
670 |
root |
1.1 |
return sv; |
671 |
|
|
|
672 |
|
|
fail: |
673 |
|
|
return 0; |
674 |
|
|
} |
675 |
|
|
|
676 |
|
|
static SV * |
677 |
|
|
decode_num (dec_t *dec) |
678 |
|
|
{ |
679 |
|
|
int is_nv = 0; |
680 |
|
|
char *start = dec->cur; |
681 |
|
|
|
682 |
|
|
// [minus] |
683 |
|
|
if (*dec->cur == '-') |
684 |
|
|
++dec->cur; |
685 |
|
|
|
686 |
|
|
if (*dec->cur == '0') |
687 |
|
|
{ |
688 |
|
|
++dec->cur; |
689 |
|
|
if (*dec->cur >= '0' && *dec->cur <= '9') |
690 |
|
|
ERR ("malformed number (leading zero must not be followed by another digit)"); |
691 |
|
|
} |
692 |
root |
1.5 |
else if (*dec->cur < '0' || *dec->cur > '9') |
693 |
|
|
ERR ("malformed number (no digits after initial minus)"); |
694 |
|
|
else |
695 |
|
|
do |
696 |
|
|
{ |
697 |
|
|
++dec->cur; |
698 |
|
|
} |
699 |
|
|
while (*dec->cur >= '0' && *dec->cur <= '9'); |
700 |
root |
1.1 |
|
701 |
|
|
// [frac] |
702 |
|
|
if (*dec->cur == '.') |
703 |
|
|
{ |
704 |
root |
1.5 |
++dec->cur; |
705 |
|
|
|
706 |
|
|
if (*dec->cur < '0' || *dec->cur > '9') |
707 |
|
|
ERR ("malformed number (no digits after decimal point)"); |
708 |
root |
1.1 |
|
709 |
|
|
do |
710 |
|
|
{ |
711 |
|
|
++dec->cur; |
712 |
|
|
} |
713 |
|
|
while (*dec->cur >= '0' && *dec->cur <= '9'); |
714 |
root |
1.5 |
|
715 |
|
|
is_nv = 1; |
716 |
root |
1.1 |
} |
717 |
|
|
|
718 |
|
|
// [exp] |
719 |
|
|
if (*dec->cur == 'e' || *dec->cur == 'E') |
720 |
|
|
{ |
721 |
root |
1.5 |
++dec->cur; |
722 |
root |
1.1 |
|
723 |
|
|
if (*dec->cur == '-' || *dec->cur == '+') |
724 |
|
|
++dec->cur; |
725 |
|
|
|
726 |
root |
1.5 |
if (*dec->cur < '0' || *dec->cur > '9') |
727 |
|
|
ERR ("malformed number (no digits after exp sign)"); |
728 |
|
|
|
729 |
|
|
do |
730 |
|
|
{ |
731 |
|
|
++dec->cur; |
732 |
|
|
} |
733 |
|
|
while (*dec->cur >= '0' && *dec->cur <= '9'); |
734 |
|
|
|
735 |
|
|
is_nv = 1; |
736 |
root |
1.1 |
} |
737 |
|
|
|
738 |
|
|
if (!is_nv) |
739 |
|
|
{ |
740 |
|
|
UV uv; |
741 |
|
|
int numtype = grok_number (start, dec->cur - start, &uv); |
742 |
|
|
if (numtype & IS_NUMBER_IN_UV) |
743 |
|
|
if (numtype & IS_NUMBER_NEG) |
744 |
|
|
{ |
745 |
|
|
if (uv < (UV)IV_MIN) |
746 |
|
|
return newSViv (-(IV)uv); |
747 |
|
|
} |
748 |
|
|
else |
749 |
|
|
return newSVuv (uv); |
750 |
|
|
} |
751 |
|
|
|
752 |
|
|
return newSVnv (Atof (start)); |
753 |
|
|
|
754 |
|
|
fail: |
755 |
|
|
return 0; |
756 |
|
|
} |
757 |
|
|
|
758 |
|
|
static SV * |
759 |
|
|
decode_av (dec_t *dec) |
760 |
|
|
{ |
761 |
|
|
AV *av = newAV (); |
762 |
|
|
|
763 |
root |
1.12 |
decode_ws (dec); |
764 |
root |
1.5 |
if (*dec->cur == ']') |
765 |
|
|
++dec->cur; |
766 |
|
|
else |
767 |
|
|
for (;;) |
768 |
|
|
{ |
769 |
|
|
SV *value; |
770 |
root |
1.1 |
|
771 |
root |
1.5 |
value = decode_sv (dec); |
772 |
|
|
if (!value) |
773 |
|
|
goto fail; |
774 |
root |
1.1 |
|
775 |
root |
1.5 |
av_push (av, value); |
776 |
root |
1.1 |
|
777 |
root |
1.12 |
decode_ws (dec); |
778 |
root |
1.1 |
|
779 |
root |
1.5 |
if (*dec->cur == ']') |
780 |
|
|
{ |
781 |
|
|
++dec->cur; |
782 |
|
|
break; |
783 |
|
|
} |
784 |
|
|
|
785 |
|
|
if (*dec->cur != ',') |
786 |
|
|
ERR (", or ] expected while parsing array"); |
787 |
root |
1.1 |
|
788 |
root |
1.5 |
++dec->cur; |
789 |
|
|
} |
790 |
root |
1.1 |
|
791 |
|
|
return newRV_noinc ((SV *)av); |
792 |
|
|
|
793 |
|
|
fail: |
794 |
|
|
SvREFCNT_dec (av); |
795 |
|
|
return 0; |
796 |
|
|
} |
797 |
|
|
|
798 |
|
|
static SV * |
799 |
|
|
decode_hv (dec_t *dec) |
800 |
|
|
{ |
801 |
|
|
HV *hv = newHV (); |
802 |
|
|
|
803 |
root |
1.12 |
decode_ws (dec); |
804 |
root |
1.5 |
if (*dec->cur == '}') |
805 |
|
|
++dec->cur; |
806 |
|
|
else |
807 |
|
|
for (;;) |
808 |
|
|
{ |
809 |
|
|
SV *key, *value; |
810 |
root |
1.1 |
|
811 |
root |
1.12 |
decode_ws (dec); EXPECT_CH ('"'); |
812 |
root |
1.1 |
|
813 |
root |
1.5 |
key = decode_str (dec); |
814 |
|
|
if (!key) |
815 |
|
|
goto fail; |
816 |
root |
1.1 |
|
817 |
root |
1.12 |
decode_ws (dec); EXPECT_CH (':'); |
818 |
root |
1.1 |
|
819 |
root |
1.5 |
value = decode_sv (dec); |
820 |
|
|
if (!value) |
821 |
|
|
{ |
822 |
|
|
SvREFCNT_dec (key); |
823 |
|
|
goto fail; |
824 |
|
|
} |
825 |
root |
1.1 |
|
826 |
root |
1.5 |
//TODO: optimise |
827 |
|
|
hv_store_ent (hv, key, value, 0); |
828 |
root |
1.1 |
|
829 |
root |
1.12 |
decode_ws (dec); |
830 |
root |
1.1 |
|
831 |
root |
1.5 |
if (*dec->cur == '}') |
832 |
|
|
{ |
833 |
|
|
++dec->cur; |
834 |
|
|
break; |
835 |
|
|
} |
836 |
root |
1.1 |
|
837 |
root |
1.5 |
if (*dec->cur != ',') |
838 |
|
|
ERR (", or } expected while parsing object/hash"); |
839 |
root |
1.1 |
|
840 |
root |
1.5 |
++dec->cur; |
841 |
|
|
} |
842 |
root |
1.1 |
|
843 |
|
|
return newRV_noinc ((SV *)hv); |
844 |
|
|
|
845 |
|
|
fail: |
846 |
|
|
SvREFCNT_dec (hv); |
847 |
|
|
return 0; |
848 |
|
|
} |
849 |
|
|
|
850 |
|
|
static SV * |
851 |
|
|
decode_sv (dec_t *dec) |
852 |
|
|
{ |
853 |
root |
1.12 |
decode_ws (dec); |
854 |
root |
1.1 |
switch (*dec->cur) |
855 |
|
|
{ |
856 |
|
|
case '"': ++dec->cur; return decode_str (dec); |
857 |
|
|
case '[': ++dec->cur; return decode_av (dec); |
858 |
|
|
case '{': ++dec->cur; return decode_hv (dec); |
859 |
|
|
|
860 |
|
|
case '-': |
861 |
|
|
case '0': case '1': case '2': case '3': case '4': |
862 |
|
|
case '5': case '6': case '7': case '8': case '9': |
863 |
|
|
return decode_num (dec); |
864 |
|
|
|
865 |
|
|
case 't': |
866 |
|
|
if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
867 |
|
|
{ |
868 |
|
|
dec->cur += 4; |
869 |
|
|
return newSViv (1); |
870 |
|
|
} |
871 |
|
|
else |
872 |
|
|
ERR ("'true' expected"); |
873 |
|
|
|
874 |
|
|
break; |
875 |
|
|
|
876 |
|
|
case 'f': |
877 |
|
|
if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
878 |
|
|
{ |
879 |
|
|
dec->cur += 5; |
880 |
|
|
return newSViv (0); |
881 |
|
|
} |
882 |
|
|
else |
883 |
|
|
ERR ("'false' expected"); |
884 |
|
|
|
885 |
|
|
break; |
886 |
|
|
|
887 |
|
|
case 'n': |
888 |
|
|
if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
889 |
|
|
{ |
890 |
|
|
dec->cur += 4; |
891 |
root |
1.5 |
return newSVsv (&PL_sv_undef); |
892 |
root |
1.1 |
} |
893 |
|
|
else |
894 |
|
|
ERR ("'null' expected"); |
895 |
|
|
|
896 |
|
|
break; |
897 |
|
|
|
898 |
|
|
default: |
899 |
root |
1.7 |
ERR ("malformed json string, neither array, object, number, string or atom"); |
900 |
root |
1.1 |
break; |
901 |
|
|
} |
902 |
|
|
|
903 |
|
|
fail: |
904 |
|
|
return 0; |
905 |
|
|
} |
906 |
|
|
|
907 |
|
|
static SV * |
908 |
|
|
decode_json (SV *string, UV flags) |
909 |
|
|
{ |
910 |
|
|
SV *sv; |
911 |
|
|
|
912 |
root |
1.5 |
if (flags & F_UTF8) |
913 |
|
|
sv_utf8_downgrade (string, 0); |
914 |
|
|
else |
915 |
root |
1.1 |
sv_utf8_upgrade (string); |
916 |
|
|
|
917 |
|
|
SvGROW (string, SvCUR (string) + 1); // should basically be a NOP |
918 |
|
|
|
919 |
|
|
dec_t dec; |
920 |
|
|
dec.flags = flags; |
921 |
|
|
dec.cur = SvPVX (string); |
922 |
|
|
dec.end = SvEND (string); |
923 |
|
|
dec.err = 0; |
924 |
|
|
|
925 |
|
|
sv = decode_sv (&dec); |
926 |
|
|
|
927 |
|
|
if (!sv) |
928 |
|
|
{ |
929 |
root |
1.7 |
IV offset = dec.flags & F_UTF8 |
930 |
|
|
? dec.cur - SvPVX (string) |
931 |
|
|
: utf8_distance (dec.cur, SvPVX (string)); |
932 |
root |
1.1 |
SV *uni = sv_newmortal (); |
933 |
root |
1.8 |
|
934 |
root |
1.5 |
// horrible hack to silence warning inside pv_uni_display |
935 |
root |
1.8 |
COP cop = *PL_curcop; |
936 |
root |
1.5 |
cop.cop_warnings = pWARN_NONE; |
937 |
root |
1.8 |
ENTER; |
938 |
root |
1.5 |
SAVEVPTR (PL_curcop); |
939 |
|
|
PL_curcop = &cop; |
940 |
root |
1.8 |
pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); |
941 |
|
|
LEAVE; |
942 |
root |
1.1 |
|
943 |
root |
1.5 |
croak ("%s, at character offset %d (%s)", |
944 |
root |
1.1 |
dec.err, |
945 |
|
|
(int)offset, |
946 |
|
|
dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); |
947 |
|
|
} |
948 |
|
|
|
949 |
root |
1.3 |
sv = sv_2mortal (sv); |
950 |
|
|
|
951 |
|
|
if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv)) |
952 |
root |
1.9 |
croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); |
953 |
root |
1.3 |
|
954 |
|
|
return sv; |
955 |
root |
1.1 |
} |
956 |
|
|
|
957 |
root |
1.12 |
///////////////////////////////////////////////////////////////////////////// |
958 |
|
|
// XS interface functions |
959 |
|
|
|
960 |
root |
1.1 |
MODULE = JSON::XS PACKAGE = JSON::XS |
961 |
|
|
|
962 |
|
|
BOOT: |
963 |
|
|
{ |
964 |
|
|
int i; |
965 |
|
|
|
966 |
|
|
memset (decode_hexdigit, 0xff, 256); |
967 |
|
|
for (i = 10; i--; ) |
968 |
|
|
decode_hexdigit ['0' + i] = i; |
969 |
|
|
|
970 |
root |
1.4 |
for (i = 7; i--; ) |
971 |
root |
1.1 |
{ |
972 |
|
|
decode_hexdigit ['a' + i] = 10 + i; |
973 |
|
|
decode_hexdigit ['A' + i] = 10 + i; |
974 |
|
|
} |
975 |
|
|
|
976 |
|
|
json_stash = gv_stashpv ("JSON::XS", 1); |
977 |
|
|
} |
978 |
|
|
|
979 |
root |
1.4 |
PROTOTYPES: DISABLE |
980 |
|
|
|
981 |
root |
1.1 |
SV *new (char *dummy) |
982 |
|
|
CODE: |
983 |
|
|
RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); |
984 |
|
|
OUTPUT: |
985 |
|
|
RETVAL |
986 |
|
|
|
987 |
root |
1.6 |
SV *ascii (SV *self, int enable = 1) |
988 |
root |
1.1 |
ALIAS: |
989 |
|
|
ascii = F_ASCII |
990 |
|
|
utf8 = F_UTF8 |
991 |
|
|
indent = F_INDENT |
992 |
|
|
canonical = F_CANONICAL |
993 |
|
|
space_before = F_SPACE_BEFORE |
994 |
|
|
space_after = F_SPACE_AFTER |
995 |
root |
1.2 |
pretty = F_PRETTY |
996 |
root |
1.3 |
allow_nonref = F_ALLOW_NONREF |
997 |
root |
1.6 |
shrink = F_SHRINK |
998 |
root |
1.1 |
CODE: |
999 |
|
|
{ |
1000 |
|
|
UV *uv = SvJSON (self); |
1001 |
|
|
if (enable) |
1002 |
|
|
*uv |= ix; |
1003 |
|
|
else |
1004 |
|
|
*uv &= ~ix; |
1005 |
|
|
|
1006 |
|
|
RETVAL = newSVsv (self); |
1007 |
|
|
} |
1008 |
|
|
OUTPUT: |
1009 |
|
|
RETVAL |
1010 |
|
|
|
1011 |
|
|
void encode (SV *self, SV *scalar) |
1012 |
|
|
PPCODE: |
1013 |
|
|
XPUSHs (encode_json (scalar, *SvJSON (self))); |
1014 |
|
|
|
1015 |
root |
1.2 |
void decode (SV *self, SV *jsonstr) |
1016 |
root |
1.1 |
PPCODE: |
1017 |
root |
1.2 |
XPUSHs (decode_json (jsonstr, *SvJSON (self))); |
1018 |
|
|
|
1019 |
root |
1.4 |
PROTOTYPES: ENABLE |
1020 |
|
|
|
1021 |
root |
1.2 |
void to_json (SV *scalar) |
1022 |
|
|
PPCODE: |
1023 |
|
|
XPUSHs (encode_json (scalar, F_UTF8)); |
1024 |
|
|
|
1025 |
|
|
void from_json (SV *jsonstr) |
1026 |
|
|
PPCODE: |
1027 |
|
|
XPUSHs (decode_json (jsonstr, F_UTF8)); |
1028 |
root |
1.1 |
|