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> |
Michael Clark | c8f4a6e | 2007-12-07 02:44:24 +0000 | [diff] [blame] | 16 | #include <stddef.h> |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 17 | #include <ctype.h> |
| 18 | #include <string.h> |
| 19 | |
| 20 | #include "bits.h" |
| 21 | #include "debug.h" |
| 22 | #include "printbuf.h" |
| 23 | #include "arraylist.h" |
| 24 | #include "json_object.h" |
| 25 | #include "json_tokener.h" |
| 26 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 27 | |
Michael Clark | 837240f | 2007-03-13 08:26:25 +0000 | [diff] [blame] | 28 | #if !HAVE_STRNCASECMP && defined(_MSC_VER) |
| 29 | /* MSC has the version as _strnicmp */ |
| 30 | # define strncasecmp _strnicmp |
| 31 | #elif !HAVE_STRNCASECMP |
| 32 | # error You do not have strncasecmp on your system. |
| 33 | #endif /* HAVE_STRNCASECMP */ |
| 34 | |
| 35 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 36 | static const char* json_null_str = "null"; |
| 37 | static const char* json_true_str = "true"; |
| 38 | static const char* json_false_str = "false"; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 39 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 40 | const char* json_tokener_errors[] = { |
| 41 | "success", |
| 42 | "continue", |
| 43 | "nesting to deep", |
| 44 | "unexpected end of data", |
| 45 | "unexpected character", |
| 46 | "null expected", |
| 47 | "boolean expected", |
| 48 | "number expected", |
| 49 | "array value separator ',' expected", |
| 50 | "quoted object property name expected", |
| 51 | "object property name separator ':' expected", |
| 52 | "object value separator ',' expected", |
| 53 | "invalid string sequence", |
| 54 | "expected comment", |
| 55 | }; |
| 56 | |
| 57 | |
Michael Clark | e8de078 | 2009-02-25 01:45:00 +0000 | [diff] [blame^] | 58 | struct json_tokener* json_tokener_new(void) |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 59 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 60 | struct json_tokener *tok = calloc(1, sizeof(struct json_tokener)); |
| 61 | tok->pb = printbuf_new(); |
| 62 | json_tokener_reset(tok); |
| 63 | return tok; |
| 64 | } |
| 65 | |
| 66 | void json_tokener_free(struct json_tokener *tok) |
| 67 | { |
| 68 | json_tokener_reset(tok); |
| 69 | if(tok) printbuf_free(tok->pb); |
| 70 | free(tok); |
| 71 | } |
| 72 | |
| 73 | static void json_tokener_reset_level(struct json_tokener *tok, int depth) |
| 74 | { |
| 75 | tok->stack[depth].state = json_tokener_state_eatws; |
| 76 | tok->stack[depth].saved_state = json_tokener_state_start; |
| 77 | json_object_put(tok->stack[depth].current); |
| 78 | tok->stack[depth].current = NULL; |
| 79 | free(tok->stack[depth].obj_field_name); |
| 80 | tok->stack[depth].obj_field_name = NULL; |
| 81 | } |
| 82 | |
| 83 | void json_tokener_reset(struct json_tokener *tok) |
| 84 | { |
| 85 | int i; |
| 86 | for(i = tok->depth; i >= 0; i--) |
| 87 | json_tokener_reset_level(tok, i); |
| 88 | tok->depth = 0; |
| 89 | tok->err = json_tokener_success; |
| 90 | } |
| 91 | |
| 92 | struct json_object* json_tokener_parse(char *str) |
| 93 | { |
| 94 | struct json_tokener* tok; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 95 | struct json_object* obj; |
| 96 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 97 | tok = json_tokener_new(); |
| 98 | obj = json_tokener_parse_ex(tok, str, -1); |
| 99 | if(tok->err != json_tokener_success) |
| 100 | obj = error_ptr(-tok->err); |
| 101 | json_tokener_free(tok); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 102 | return obj; |
| 103 | } |
| 104 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 105 | |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 106 | #if !HAVE_STRNDUP |
| 107 | /* CAW: compliant version of strndup() */ |
| 108 | char* strndup(const char* str, size_t n) |
| 109 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 110 | if(str) { |
| 111 | size_t len = strlen(str); |
| 112 | size_t nn = min(len,n); |
| 113 | char* s = (char*)malloc(sizeof(char) * (nn + 1)); |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 114 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 115 | if(s) { |
| 116 | memcpy(s, str, nn); |
| 117 | s[nn] = '\0'; |
| 118 | } |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 119 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 120 | return s; |
| 121 | } |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 122 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 123 | return NULL; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 124 | } |
| 125 | #endif |
| 126 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 127 | |
| 128 | #define state tok->stack[tok->depth].state |
| 129 | #define saved_state tok->stack[tok->depth].saved_state |
| 130 | #define current tok->stack[tok->depth].current |
| 131 | #define obj_field_name tok->stack[tok->depth].obj_field_name |
| 132 | |
| 133 | struct json_object* json_tokener_parse_ex(struct json_tokener *tok, |
| 134 | char *str, int len) |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 135 | { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 136 | struct json_object *obj = NULL; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 137 | char c; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 138 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 139 | tok->char_offset = 0; |
| 140 | tok->err = json_tokener_success; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 141 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 142 | do { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 143 | if(tok->char_offset == len) { |
| 144 | if(tok->depth == 0 && state == json_tokener_state_eatws && |
| 145 | saved_state == json_tokener_state_finish) |
| 146 | tok->err = json_tokener_success; |
| 147 | else |
| 148 | tok->err = json_tokener_continue; |
| 149 | goto out; |
| 150 | } |
| 151 | |
| 152 | c = *str; |
| 153 | redo_char: |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 154 | switch(state) { |
| 155 | |
| 156 | case json_tokener_state_eatws: |
| 157 | if(isspace(c)) { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 158 | /* okay */ |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 159 | } else if(c == '/') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 160 | printbuf_reset(tok->pb); |
| 161 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 162 | state = json_tokener_state_comment_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 163 | } else { |
| 164 | state = saved_state; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 165 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 166 | } |
| 167 | break; |
| 168 | |
| 169 | case json_tokener_state_start: |
| 170 | switch(c) { |
| 171 | case '{': |
| 172 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 173 | saved_state = json_tokener_state_object_field_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 174 | current = json_object_new_object(); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 175 | break; |
| 176 | case '[': |
| 177 | state = json_tokener_state_eatws; |
| 178 | saved_state = json_tokener_state_array; |
| 179 | current = json_object_new_array(); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 180 | break; |
| 181 | case 'N': |
| 182 | case 'n': |
| 183 | state = json_tokener_state_null; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 184 | printbuf_reset(tok->pb); |
| 185 | tok->st_pos = 0; |
| 186 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 187 | case '"': |
| 188 | case '\'': |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 189 | state = json_tokener_state_string; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 190 | printbuf_reset(tok->pb); |
| 191 | tok->quote_char = c; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 192 | break; |
| 193 | case 'T': |
| 194 | case 't': |
| 195 | case 'F': |
| 196 | case 'f': |
| 197 | state = json_tokener_state_boolean; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 198 | printbuf_reset(tok->pb); |
| 199 | tok->st_pos = 0; |
| 200 | goto redo_char; |
Michael Clark | 4504df7 | 2007-03-13 08:26:20 +0000 | [diff] [blame] | 201 | #if defined(__GNUC__) |
| 202 | case '0' ... '9': |
| 203 | #else |
| 204 | case '0': |
| 205 | case '1': |
| 206 | case '2': |
| 207 | case '3': |
| 208 | case '4': |
| 209 | case '5': |
| 210 | case '6': |
| 211 | case '7': |
| 212 | case '8': |
| 213 | case '9': |
| 214 | #endif |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 215 | case '-': |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 216 | state = json_tokener_state_number; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 217 | printbuf_reset(tok->pb); |
| 218 | tok->is_double = 0; |
| 219 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 220 | default: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 221 | tok->err = json_tokener_error_parse_unexpected; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 222 | goto out; |
| 223 | } |
| 224 | break; |
| 225 | |
| 226 | case json_tokener_state_finish: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 227 | if(tok->depth == 0) goto out; |
| 228 | obj = json_object_get(current); |
| 229 | json_tokener_reset_level(tok, tok->depth); |
| 230 | tok->depth--; |
| 231 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 232 | |
| 233 | case json_tokener_state_null: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 234 | printbuf_memappend(tok->pb, &c, 1); |
| 235 | if(strncasecmp(json_null_str, tok->pb->buf, |
| 236 | min(tok->st_pos+1, strlen(json_null_str))) == 0) { |
| 237 | if(tok->st_pos == strlen(json_null_str)) { |
| 238 | current = NULL; |
| 239 | saved_state = json_tokener_state_finish; |
| 240 | state = json_tokener_state_eatws; |
| 241 | goto redo_char; |
| 242 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 243 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 244 | tok->err = json_tokener_error_parse_null; |
| 245 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 246 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 247 | tok->st_pos++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 248 | break; |
| 249 | |
| 250 | case json_tokener_state_comment_start: |
| 251 | if(c == '*') { |
| 252 | state = json_tokener_state_comment; |
| 253 | } else if(c == '/') { |
| 254 | state = json_tokener_state_comment_eol; |
| 255 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 256 | tok->err = json_tokener_error_parse_comment; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 257 | goto out; |
| 258 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 259 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 260 | break; |
| 261 | |
| 262 | case json_tokener_state_comment: |
| 263 | if(c == '*') state = json_tokener_state_comment_end; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 264 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 265 | break; |
| 266 | |
| 267 | case json_tokener_state_comment_eol: |
| 268 | if(c == '\n') { |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame] | 269 | MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 270 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 271 | } else { |
| 272 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 273 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 274 | break; |
| 275 | |
| 276 | case json_tokener_state_comment_end: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 277 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 278 | if(c == '/') { |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame] | 279 | MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 280 | state = json_tokener_state_eatws; |
| 281 | } else { |
| 282 | state = json_tokener_state_comment; |
| 283 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 284 | break; |
| 285 | |
| 286 | case json_tokener_state_string: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 287 | if(c == tok->quote_char) { |
| 288 | current = json_object_new_string(tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 289 | saved_state = json_tokener_state_finish; |
| 290 | state = json_tokener_state_eatws; |
| 291 | } else if(c == '\\') { |
| 292 | saved_state = json_tokener_state_string; |
| 293 | state = json_tokener_state_string_escape; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 294 | } else { |
| 295 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 296 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 297 | break; |
| 298 | |
| 299 | case json_tokener_state_string_escape: |
| 300 | switch(c) { |
| 301 | case '"': |
| 302 | case '\\': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 303 | case '/': |
| 304 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 305 | state = saved_state; |
| 306 | break; |
| 307 | case 'b': |
| 308 | case 'n': |
| 309 | case 'r': |
| 310 | case 't': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 311 | if(c == 'b') printbuf_memappend(tok->pb, "\b", 1); |
| 312 | else if(c == 'n') printbuf_memappend(tok->pb, "\n", 1); |
| 313 | else if(c == 'r') printbuf_memappend(tok->pb, "\r", 1); |
| 314 | else if(c == 't') printbuf_memappend(tok->pb, "\t", 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 315 | state = saved_state; |
| 316 | break; |
| 317 | case 'u': |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 318 | tok->ucs_char = 0; |
| 319 | tok->st_pos = 0; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 320 | state = json_tokener_state_escape_unicode; |
| 321 | break; |
| 322 | default: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 323 | tok->err = json_tokener_error_parse_string; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 324 | goto out; |
| 325 | } |
| 326 | break; |
| 327 | |
| 328 | case json_tokener_state_escape_unicode: |
| 329 | if(strchr(json_hex_chars, c)) { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 330 | tok->ucs_char += ((unsigned int)hexdigit(c) << ((3-tok->st_pos++)*4)); |
| 331 | if(tok->st_pos == 4) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 332 | unsigned char utf_out[3]; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 333 | if (tok->ucs_char < 0x80) { |
| 334 | utf_out[0] = tok->ucs_char; |
| 335 | printbuf_memappend(tok->pb, (char*)utf_out, 1); |
| 336 | } else if (tok->ucs_char < 0x800) { |
| 337 | utf_out[0] = 0xc0 | (tok->ucs_char >> 6); |
| 338 | utf_out[1] = 0x80 | (tok->ucs_char & 0x3f); |
| 339 | printbuf_memappend(tok->pb, (char*)utf_out, 2); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 340 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 341 | utf_out[0] = 0xe0 | (tok->ucs_char >> 12); |
| 342 | utf_out[1] = 0x80 | ((tok->ucs_char >> 6) & 0x3f); |
| 343 | utf_out[2] = 0x80 | (tok->ucs_char & 0x3f); |
| 344 | printbuf_memappend(tok->pb, (char*)utf_out, 3); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 345 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 346 | state = saved_state; |
| 347 | } |
| 348 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 349 | tok->err = json_tokener_error_parse_string; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 350 | goto out; |
| 351 | } |
| 352 | break; |
| 353 | |
| 354 | case json_tokener_state_boolean: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 355 | printbuf_memappend(tok->pb, &c, 1); |
| 356 | if(strncasecmp(json_true_str, tok->pb->buf, |
| 357 | min(tok->st_pos+1, strlen(json_true_str))) == 0) { |
| 358 | if(tok->st_pos == strlen(json_true_str)) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 359 | current = json_object_new_boolean(1); |
| 360 | saved_state = json_tokener_state_finish; |
| 361 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 362 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 363 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 364 | } else if(strncasecmp(json_false_str, tok->pb->buf, |
| 365 | min(tok->st_pos+1, strlen(json_false_str))) == 0) { |
| 366 | if(tok->st_pos == strlen(json_false_str)) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 367 | current = json_object_new_boolean(0); |
| 368 | saved_state = json_tokener_state_finish; |
| 369 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 370 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 371 | } |
| 372 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 373 | tok->err = json_tokener_error_parse_boolean; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 374 | goto out; |
| 375 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 376 | tok->st_pos++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 377 | break; |
| 378 | |
| 379 | case json_tokener_state_number: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 380 | if(c && strchr(json_number_chars, c)) { |
| 381 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | c8f4a6e | 2007-12-07 02:44:24 +0000 | [diff] [blame] | 382 | if(c == '.' || c == 'e' || c == 'E') tok->is_double = 1; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 383 | } else { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 384 | int numi; |
| 385 | double numd; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 386 | if(!tok->is_double && sscanf(tok->pb->buf, "%d", &numi) == 1) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 387 | current = json_object_new_int(numi); |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 388 | } else if(tok->is_double && sscanf(tok->pb->buf, "%lf", &numd) == 1) { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 389 | current = json_object_new_double(numd); |
| 390 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 391 | tok->err = json_tokener_error_parse_number; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 392 | goto out; |
| 393 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 394 | saved_state = json_tokener_state_finish; |
| 395 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 396 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 397 | } |
| 398 | break; |
| 399 | |
| 400 | case json_tokener_state_array: |
| 401 | if(c == ']') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 402 | saved_state = json_tokener_state_finish; |
| 403 | state = json_tokener_state_eatws; |
| 404 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 405 | if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) { |
| 406 | tok->err = json_tokener_error_depth; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 407 | goto out; |
| 408 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 409 | state = json_tokener_state_array_add; |
| 410 | tok->depth++; |
| 411 | json_tokener_reset_level(tok, tok->depth); |
| 412 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 413 | } |
| 414 | break; |
| 415 | |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 416 | case json_tokener_state_array_add: |
| 417 | json_object_array_add(current, obj); |
| 418 | saved_state = json_tokener_state_array_sep; |
| 419 | state = json_tokener_state_eatws; |
| 420 | goto redo_char; |
| 421 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 422 | case json_tokener_state_array_sep: |
| 423 | if(c == ']') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 424 | saved_state = json_tokener_state_finish; |
| 425 | state = json_tokener_state_eatws; |
| 426 | } else if(c == ',') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 427 | saved_state = json_tokener_state_array; |
| 428 | state = json_tokener_state_eatws; |
| 429 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 430 | tok->err = json_tokener_error_parse_array; |
| 431 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 432 | } |
| 433 | break; |
| 434 | |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 435 | case json_tokener_state_object_field_start: |
| 436 | if(c == '}') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 437 | saved_state = json_tokener_state_finish; |
| 438 | state = json_tokener_state_eatws; |
| 439 | } else if (c == '"' || c == '\'') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 440 | tok->quote_char = c; |
| 441 | printbuf_reset(tok->pb); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 442 | state = json_tokener_state_object_field; |
Michael Clark | 0370baa | 2007-03-13 08:26:22 +0000 | [diff] [blame] | 443 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 444 | tok->err = json_tokener_error_parse_object_key_name; |
Michael Clark | 0370baa | 2007-03-13 08:26:22 +0000 | [diff] [blame] | 445 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 446 | } |
| 447 | break; |
| 448 | |
| 449 | case json_tokener_state_object_field: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 450 | if(c == tok->quote_char) { |
| 451 | obj_field_name = strdup(tok->pb->buf); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 452 | saved_state = json_tokener_state_object_field_end; |
| 453 | state = json_tokener_state_eatws; |
| 454 | } else if(c == '\\') { |
| 455 | saved_state = json_tokener_state_object_field; |
| 456 | state = json_tokener_state_string_escape; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 457 | } else { |
| 458 | printbuf_memappend(tok->pb, &c, 1); |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 459 | } |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 460 | break; |
| 461 | |
| 462 | case json_tokener_state_object_field_end: |
| 463 | if(c == ':') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 464 | saved_state = json_tokener_state_object_value; |
| 465 | state = json_tokener_state_eatws; |
| 466 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 467 | tok->err = json_tokener_error_parse_object_key_sep; |
| 468 | goto out; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 469 | } |
| 470 | break; |
| 471 | |
| 472 | case json_tokener_state_object_value: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 473 | if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) { |
| 474 | tok->err = json_tokener_error_depth; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 475 | goto out; |
| 476 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 477 | state = json_tokener_state_object_value_add; |
| 478 | tok->depth++; |
| 479 | json_tokener_reset_level(tok, tok->depth); |
| 480 | goto redo_char; |
| 481 | |
| 482 | case json_tokener_state_object_value_add: |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 483 | json_object_object_add(current, obj_field_name, obj); |
| 484 | free(obj_field_name); |
| 485 | obj_field_name = NULL; |
| 486 | saved_state = json_tokener_state_object_sep; |
| 487 | state = json_tokener_state_eatws; |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 488 | goto redo_char; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 489 | |
| 490 | case json_tokener_state_object_sep: |
| 491 | if(c == '}') { |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 492 | saved_state = json_tokener_state_finish; |
| 493 | state = json_tokener_state_eatws; |
| 494 | } else if(c == ',') { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 495 | saved_state = json_tokener_state_object_field_start; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 496 | state = json_tokener_state_eatws; |
| 497 | } else { |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 498 | tok->err = json_tokener_error_parse_object_value_sep; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 499 | goto out; |
| 500 | } |
| 501 | break; |
| 502 | |
| 503 | } |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 504 | str++; |
| 505 | tok->char_offset++; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 506 | } while(c); |
| 507 | |
| 508 | if(state != json_tokener_state_finish && |
| 509 | saved_state != json_tokener_state_finish) |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 510 | tok->err = json_tokener_error_parse_eof; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 511 | |
| 512 | out: |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 513 | if(tok->err == json_tokener_success) return json_object_get(current); |
Michael Clark | dfaf670 | 2007-10-25 02:26:00 +0000 | [diff] [blame] | 514 | MC_DEBUG("json_tokener_parse_ex: error %s at offset %d\n", |
Michael Clark | a850f8e | 2007-03-13 08:26:26 +0000 | [diff] [blame] | 515 | json_tokener_errors[tok->err], tok->char_offset); |
| 516 | return NULL; |
Michael Clark | f0d0888 | 2007-03-13 08:26:18 +0000 | [diff] [blame] | 517 | } |