Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 1 | /* |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 2 | * $Id: json_tokener.c,v 1.20 2006/07/25 03:24:50 mclark Exp $ |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 3 | * |
Michael Clark | f6a6e48 | 2007-03-13 08:26:23 +0000 | [diff] [blame] | 4 | * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 5 | * Michael Clark <michael@metaparadigm.com> |
| 6 | * |
Michael Clark | f6a6e48 | 2007-03-13 08:26:23 +0000 | [diff] [blame] | 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the MIT license. See COPYING for details. |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 9 | * |
| 10 | */ |
| 11 | |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 12 | #include "config.h" |
| 13 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 14 | #include <stdio.h> |
| 15 | #include <stdlib.h> |
| 16 | #include <ctype.h> |
| 17 | #include <string.h> |
| 18 | |
| 19 | #include "bits.h" |
| 20 | #include "debug.h" |
| 21 | #include "printbuf.h" |
| 22 | #include "arraylist.h" |
| 23 | #include "json_object.h" |
| 24 | #include "json_tokener.h" |
| 25 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 26 | |
Michael Clark | 837240f | 2007-03-13 08:26:25 +0000 | [diff] [blame] | 27 | #if !HAVE_STRNCASECMP && defined(_MSC_VER) |
| 28 | /* MSC has the version as _strnicmp */ |
| 29 | # define strncasecmp _strnicmp |
| 30 | #elif !HAVE_STRNCASECMP |
| 31 | # error You do not have strncasecmp on your system. |
| 32 | #endif /* HAVE_STRNCASECMP */ |
| 33 | |
| 34 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 35 | static const char* json_null_str = "null"; |
| 36 | static const char* json_true_str = "true"; |
| 37 | static const char* json_false_str = "false"; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 38 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 39 | const char* json_tokener_errors[] = { |
| 40 | "success", |
| 41 | "continue", |
| 42 | "nesting to deep", |
| 43 | "unexpected end of data", |
| 44 | "unexpected character", |
| 45 | "null expected", |
| 46 | "boolean expected", |
| 47 | "number expected", |
| 48 | "array value separator ',' expected", |
| 49 | "quoted object property name expected", |
| 50 | "object property name separator ':' expected", |
| 51 | "object value separator ',' expected", |
| 52 | "invalid string sequence", |
| 53 | "expected comment", |
| 54 | }; |
| 55 | |
| 56 | |
| 57 | struct json_tokener* json_tokener_new() |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 58 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 59 | struct json_tokener *tok = calloc(1, sizeof(struct json_tokener)); |
| 60 | tok->pb = printbuf_new(); |
| 61 | json_tokener_reset(tok); |
| 62 | return tok; |
| 63 | } |
| 64 | |
| 65 | void json_tokener_free(struct json_tokener *tok) |
| 66 | { |
| 67 | json_tokener_reset(tok); |
| 68 | if(tok) printbuf_free(tok->pb); |
| 69 | free(tok); |
| 70 | } |
| 71 | |
| 72 | static void json_tokener_reset_level(struct json_tokener *tok, int depth) |
| 73 | { |
| 74 | tok->stack[depth].state = json_tokener_state_eatws; |
| 75 | tok->stack[depth].saved_state = json_tokener_state_start; |
| 76 | json_object_put(tok->stack[depth].current); |
| 77 | tok->stack[depth].current = NULL; |
| 78 | free(tok->stack[depth].obj_field_name); |
| 79 | tok->stack[depth].obj_field_name = NULL; |
| 80 | } |
| 81 | |
| 82 | void json_tokener_reset(struct json_tokener *tok) |
| 83 | { |
| 84 | int i; |
| 85 | for(i = tok->depth; i >= 0; i--) |
| 86 | json_tokener_reset_level(tok, i); |
| 87 | tok->depth = 0; |
| 88 | tok->err = json_tokener_success; |
| 89 | } |
| 90 | |
| 91 | struct json_object* json_tokener_parse(char *str) |
| 92 | { |
| 93 | struct json_tokener* tok; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 94 | struct json_object* obj; |
| 95 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 96 | tok = json_tokener_new(); |
| 97 | obj = json_tokener_parse_ex(tok, str, -1); |
| 98 | if(tok->err != json_tokener_success) |
| 99 | obj = error_ptr(-tok->err); |
| 100 | json_tokener_free(tok); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 101 | return obj; |
| 102 | } |
| 103 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 104 | |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 105 | #if !HAVE_STRNDUP |
| 106 | /* CAW: compliant version of strndup() */ |
| 107 | char* strndup(const char* str, size_t n) |
| 108 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 109 | if(str) { |
| 110 | size_t len = strlen(str); |
| 111 | size_t nn = min(len,n); |
| 112 | char* s = (char*)malloc(sizeof(char) * (nn + 1)); |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 113 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 114 | if(s) { |
| 115 | memcpy(s, str, nn); |
| 116 | s[nn] = '\0'; |
| 117 | } |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 118 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 119 | return s; |
| 120 | } |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 121 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 122 | return NULL; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 123 | } |
| 124 | #endif |
| 125 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 126 | |
| 127 | #define state tok->stack[tok->depth].state |
| 128 | #define saved_state tok->stack[tok->depth].saved_state |
| 129 | #define current tok->stack[tok->depth].current |
| 130 | #define obj_field_name tok->stack[tok->depth].obj_field_name |
| 131 | |
| 132 | struct json_object* json_tokener_parse_ex(struct json_tokener *tok, |
| 133 | char *str, int len) |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 134 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 135 | struct json_object *obj = NULL; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 136 | char c; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 137 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 138 | tok->char_offset = 0; |
| 139 | tok->err = json_tokener_success; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 140 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 141 | do { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 142 | if(tok->char_offset == len) { |
| 143 | if(tok->depth == 0 && state == json_tokener_state_eatws && |
| 144 | saved_state == json_tokener_state_finish) |
| 145 | tok->err = json_tokener_success; |
| 146 | else |
| 147 | tok->err = json_tokener_continue; |
| 148 | goto out; |
| 149 | } |
| 150 | |
| 151 | c = *str; |
| 152 | redo_char: |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 153 | switch(state) { |
| 154 | |
| 155 | case json_tokener_state_eatws: |
| 156 | if(isspace(c)) { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 157 | /* okay */ |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 158 | } else if(c == '/') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 159 | printbuf_reset(tok->pb); |
| 160 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 161 | state = json_tokener_state_comment_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 162 | } else { |
| 163 | state = saved_state; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 164 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 165 | } |
| 166 | break; |
| 167 | |
| 168 | case json_tokener_state_start: |
| 169 | switch(c) { |
| 170 | case '{': |
| 171 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 172 | saved_state = json_tokener_state_object_field_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 173 | current = json_object_new_object(); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 174 | break; |
| 175 | case '[': |
| 176 | state = json_tokener_state_eatws; |
| 177 | saved_state = json_tokener_state_array; |
| 178 | current = json_object_new_array(); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 179 | break; |
| 180 | case 'N': |
| 181 | case 'n': |
| 182 | state = json_tokener_state_null; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 183 | printbuf_reset(tok->pb); |
| 184 | tok->st_pos = 0; |
| 185 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 186 | case '"': |
| 187 | case '\'': |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 188 | state = json_tokener_state_string; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 189 | printbuf_reset(tok->pb); |
| 190 | tok->quote_char = c; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 191 | break; |
| 192 | case 'T': |
| 193 | case 't': |
| 194 | case 'F': |
| 195 | case 'f': |
| 196 | state = json_tokener_state_boolean; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 197 | printbuf_reset(tok->pb); |
| 198 | tok->st_pos = 0; |
| 199 | goto redo_char; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 200 | #if defined(__GNUC__) |
| 201 | case '0' ... '9': |
| 202 | #else |
| 203 | case '0': |
| 204 | case '1': |
| 205 | case '2': |
| 206 | case '3': |
| 207 | case '4': |
| 208 | case '5': |
| 209 | case '6': |
| 210 | case '7': |
| 211 | case '8': |
| 212 | case '9': |
| 213 | #endif |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 214 | case '-': |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 215 | state = json_tokener_state_number; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 216 | printbuf_reset(tok->pb); |
| 217 | tok->is_double = 0; |
| 218 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 219 | default: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 220 | tok->err = json_tokener_error_parse_unexpected; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 221 | goto out; |
| 222 | } |
| 223 | break; |
| 224 | |
| 225 | case json_tokener_state_finish: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 226 | if(tok->depth == 0) goto out; |
| 227 | obj = json_object_get(current); |
| 228 | json_tokener_reset_level(tok, tok->depth); |
| 229 | tok->depth--; |
| 230 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 231 | |
| 232 | case json_tokener_state_null: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 233 | printbuf_memappend(tok->pb, &c, 1); |
| 234 | if(strncasecmp(json_null_str, tok->pb->buf, |
| 235 | min(tok->st_pos+1, strlen(json_null_str))) == 0) { |
| 236 | if(tok->st_pos == strlen(json_null_str)) { |
| 237 | current = NULL; |
| 238 | saved_state = json_tokener_state_finish; |
| 239 | state = json_tokener_state_eatws; |
| 240 | goto redo_char; |
| 241 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 242 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 243 | tok->err = json_tokener_error_parse_null; |
| 244 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 245 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 246 | tok->st_pos++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 247 | break; |
| 248 | |
| 249 | case json_tokener_state_comment_start: |
| 250 | if(c == '*') { |
| 251 | state = json_tokener_state_comment; |
| 252 | } else if(c == '/') { |
| 253 | state = json_tokener_state_comment_eol; |
| 254 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 255 | tok->err = json_tokener_error_parse_comment; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 256 | goto out; |
| 257 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 258 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 259 | break; |
| 260 | |
| 261 | case json_tokener_state_comment: |
| 262 | if(c == '*') state = json_tokener_state_comment_end; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 263 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 264 | break; |
| 265 | |
| 266 | case json_tokener_state_comment_eol: |
| 267 | if(c == '\n') { |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame^] | 268 | MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 269 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 270 | } else { |
| 271 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 272 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 273 | break; |
| 274 | |
| 275 | case json_tokener_state_comment_end: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 276 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 277 | if(c == '/') { |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame^] | 278 | MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 279 | state = json_tokener_state_eatws; |
| 280 | } else { |
| 281 | state = json_tokener_state_comment; |
| 282 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 283 | break; |
| 284 | |
| 285 | case json_tokener_state_string: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 286 | if(c == tok->quote_char) { |
| 287 | current = json_object_new_string(tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 288 | saved_state = json_tokener_state_finish; |
| 289 | state = json_tokener_state_eatws; |
| 290 | } else if(c == '\\') { |
| 291 | saved_state = json_tokener_state_string; |
| 292 | state = json_tokener_state_string_escape; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 293 | } else { |
| 294 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 295 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 296 | break; |
| 297 | |
| 298 | case json_tokener_state_string_escape: |
| 299 | switch(c) { |
| 300 | case '"': |
| 301 | case '\\': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 302 | case '/': |
| 303 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 304 | state = saved_state; |
| 305 | break; |
| 306 | case 'b': |
| 307 | case 'n': |
| 308 | case 'r': |
| 309 | case 't': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 310 | if(c == 'b') printbuf_memappend(tok->pb, "\b", 1); |
| 311 | else if(c == 'n') printbuf_memappend(tok->pb, "\n", 1); |
| 312 | else if(c == 'r') printbuf_memappend(tok->pb, "\r", 1); |
| 313 | else if(c == 't') printbuf_memappend(tok->pb, "\t", 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 314 | state = saved_state; |
| 315 | break; |
| 316 | case 'u': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 317 | tok->ucs_char = 0; |
| 318 | tok->st_pos = 0; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 319 | state = json_tokener_state_escape_unicode; |
| 320 | break; |
| 321 | default: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 322 | tok->err = json_tokener_error_parse_string; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 323 | goto out; |
| 324 | } |
| 325 | break; |
| 326 | |
| 327 | case json_tokener_state_escape_unicode: |
| 328 | if(strchr(json_hex_chars, c)) { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 329 | tok->ucs_char += ((unsigned int)hexdigit(c) << ((3-tok->st_pos++)*4)); |
| 330 | if(tok->st_pos == 4) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 331 | unsigned char utf_out[3]; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 332 | if (tok->ucs_char < 0x80) { |
| 333 | utf_out[0] = tok->ucs_char; |
| 334 | printbuf_memappend(tok->pb, (char*)utf_out, 1); |
| 335 | } else if (tok->ucs_char < 0x800) { |
| 336 | utf_out[0] = 0xc0 | (tok->ucs_char >> 6); |
| 337 | utf_out[1] = 0x80 | (tok->ucs_char & 0x3f); |
| 338 | printbuf_memappend(tok->pb, (char*)utf_out, 2); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 339 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 340 | utf_out[0] = 0xe0 | (tok->ucs_char >> 12); |
| 341 | utf_out[1] = 0x80 | ((tok->ucs_char >> 6) & 0x3f); |
| 342 | utf_out[2] = 0x80 | (tok->ucs_char & 0x3f); |
| 343 | printbuf_memappend(tok->pb, (char*)utf_out, 3); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 344 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 345 | state = saved_state; |
| 346 | } |
| 347 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 348 | tok->err = json_tokener_error_parse_string; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 349 | goto out; |
| 350 | } |
| 351 | break; |
| 352 | |
| 353 | case json_tokener_state_boolean: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 354 | printbuf_memappend(tok->pb, &c, 1); |
| 355 | if(strncasecmp(json_true_str, tok->pb->buf, |
| 356 | min(tok->st_pos+1, strlen(json_true_str))) == 0) { |
| 357 | if(tok->st_pos == strlen(json_true_str)) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 358 | current = json_object_new_boolean(1); |
| 359 | saved_state = json_tokener_state_finish; |
| 360 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 361 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 362 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 363 | } else if(strncasecmp(json_false_str, tok->pb->buf, |
| 364 | min(tok->st_pos+1, strlen(json_false_str))) == 0) { |
| 365 | if(tok->st_pos == strlen(json_false_str)) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 366 | current = json_object_new_boolean(0); |
| 367 | saved_state = json_tokener_state_finish; |
| 368 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 369 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 370 | } |
| 371 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 372 | tok->err = json_tokener_error_parse_boolean; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 373 | goto out; |
| 374 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 375 | tok->st_pos++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 376 | break; |
| 377 | |
| 378 | case json_tokener_state_number: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 379 | if(c && strchr(json_number_chars, c)) { |
| 380 | printbuf_memappend(tok->pb, &c, 1); |
| 381 | if(c == '.' || c == 'e') tok->is_double = 1; |
| 382 | } else { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 383 | int numi; |
| 384 | double numd; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 385 | if(!tok->is_double && sscanf(tok->pb->buf, "%d", &numi) == 1) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 386 | current = json_object_new_int(numi); |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 387 | } else if(tok->is_double && sscanf(tok->pb->buf, "%lf", &numd) == 1) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 388 | current = json_object_new_double(numd); |
| 389 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 390 | tok->err = json_tokener_error_parse_number; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 391 | goto out; |
| 392 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 393 | saved_state = json_tokener_state_finish; |
| 394 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 395 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 396 | } |
| 397 | break; |
| 398 | |
| 399 | case json_tokener_state_array: |
| 400 | if(c == ']') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 401 | saved_state = json_tokener_state_finish; |
| 402 | state = json_tokener_state_eatws; |
| 403 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 404 | if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) { |
| 405 | tok->err = json_tokener_error_depth; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 406 | goto out; |
| 407 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 408 | state = json_tokener_state_array_add; |
| 409 | tok->depth++; |
| 410 | json_tokener_reset_level(tok, tok->depth); |
| 411 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 412 | } |
| 413 | break; |
| 414 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 415 | case json_tokener_state_array_add: |
| 416 | json_object_array_add(current, obj); |
| 417 | saved_state = json_tokener_state_array_sep; |
| 418 | state = json_tokener_state_eatws; |
| 419 | goto redo_char; |
| 420 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 421 | case json_tokener_state_array_sep: |
| 422 | if(c == ']') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 423 | saved_state = json_tokener_state_finish; |
| 424 | state = json_tokener_state_eatws; |
| 425 | } else if(c == ',') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 426 | saved_state = json_tokener_state_array; |
| 427 | state = json_tokener_state_eatws; |
| 428 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 429 | tok->err = json_tokener_error_parse_array; |
| 430 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 431 | } |
| 432 | break; |
| 433 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 434 | case json_tokener_state_object_field_start: |
| 435 | if(c == '}') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 436 | saved_state = json_tokener_state_finish; |
| 437 | state = json_tokener_state_eatws; |
| 438 | } else if (c == '"' || c == '\'') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 439 | tok->quote_char = c; |
| 440 | printbuf_reset(tok->pb); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 441 | state = json_tokener_state_object_field; |
Michael Clark | 0370baa | 2007-03-13 08:26:22 +0000 | [diff] [blame] | 442 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 443 | tok->err = json_tokener_error_parse_object_key_name; |
Michael Clark | 0370baa | 2007-03-13 08:26:22 +0000 | [diff] [blame] | 444 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 445 | } |
| 446 | break; |
| 447 | |
| 448 | case json_tokener_state_object_field: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 449 | if(c == tok->quote_char) { |
| 450 | obj_field_name = strdup(tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 451 | saved_state = json_tokener_state_object_field_end; |
| 452 | state = json_tokener_state_eatws; |
| 453 | } else if(c == '\\') { |
| 454 | saved_state = json_tokener_state_object_field; |
| 455 | state = json_tokener_state_string_escape; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 456 | } else { |
| 457 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 458 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 459 | break; |
| 460 | |
| 461 | case json_tokener_state_object_field_end: |
| 462 | if(c == ':') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 463 | saved_state = json_tokener_state_object_value; |
| 464 | state = json_tokener_state_eatws; |
| 465 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 466 | tok->err = json_tokener_error_parse_object_key_sep; |
| 467 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 468 | } |
| 469 | break; |
| 470 | |
| 471 | case json_tokener_state_object_value: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 472 | if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) { |
| 473 | tok->err = json_tokener_error_depth; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 474 | goto out; |
| 475 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 476 | state = json_tokener_state_object_value_add; |
| 477 | tok->depth++; |
| 478 | json_tokener_reset_level(tok, tok->depth); |
| 479 | goto redo_char; |
| 480 | |
| 481 | case json_tokener_state_object_value_add: |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 482 | json_object_object_add(current, obj_field_name, obj); |
| 483 | free(obj_field_name); |
| 484 | obj_field_name = NULL; |
| 485 | saved_state = json_tokener_state_object_sep; |
| 486 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 487 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 488 | |
| 489 | case json_tokener_state_object_sep: |
| 490 | if(c == '}') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 491 | saved_state = json_tokener_state_finish; |
| 492 | state = json_tokener_state_eatws; |
| 493 | } else if(c == ',') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 494 | saved_state = json_tokener_state_object_field_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 495 | state = json_tokener_state_eatws; |
| 496 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 497 | tok->err = json_tokener_error_parse_object_value_sep; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 498 | goto out; |
| 499 | } |
| 500 | break; |
| 501 | |
| 502 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 503 | str++; |
| 504 | tok->char_offset++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 505 | } while(c); |
| 506 | |
| 507 | if(state != json_tokener_state_finish && |
| 508 | saved_state != json_tokener_state_finish) |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 509 | tok->err = json_tokener_error_parse_eof; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 510 | |
| 511 | out: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 512 | if(tok->err == json_tokener_success) return json_object_get(current); |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame^] | 513 | MC_DEBUG("json_tokener_parse_ex: error %s at offset %d\n", |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 514 | json_tokener_errors[tok->err], tok->char_offset); |
| 515 | return NULL; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 516 | } |